The advantages of new Sudan grass “Alisa”

Author(s):  
Н. Ковтунова ◽  
А. Алабушев ◽  
А. Романюкин ◽  
Е. Шишова ◽  
В. Ковтунов ◽  
...  

Одной из задач сельского хозяйства является увеличение производства кормов для животных, улучшение их качества и питательности. Большую роль при этом играют однолетние кормовые культуры, среди которых по жаро и засухоустойчивости, неприхотливости к почвам, стабильной урожайности следует выделить суданскую траву. В Государственный реестр селекционных достижений к 2018 году включён 41 сорт суданской травы, восемь из которых рекомендованы для возделывания в СевероКавказском регионе. Современные сорта суданской травы позволяют получать до 4045 т/га зелёной массы за сезон (дватри укоса). Отмечая успехи в селекции суданской травы, следует признать, что имеющийся ассортимент сортов необходимо расширить новыми сортами, обладающими лучшими качествами. В связи с этим целью работы являлось создание среднеспелого сорта суданской травы с высокой адаптивностью, обеспечивающего прибавку урожайности зелёной массы 24 т/га. Исследования выполнены в ФГБНУ АНЦ Донской в соответствии с Методикой Государственной комиссии по сортоиспытанию сельскохозяйственных культур. Создан новый среднеспелый сорт суданской травы Алиса. Растения высокорослые, при созревании достигают высоты 215 см, хорошо облиственные (3545), сухо и тонкостебельные (0,61,0 см), кустистые, ко второму укосу формируют до трёхпяти стеблей на растении. Сорт отличается повышенной интенсивностью начального роста и послеукосного отрастания, устойчивостью к засухе. Средняя урожайность зелёной массы в конкурсном испытании составила 42 т/га, абсолютно сухого вещества 10,8 т/га, что превысило показатели стандарта Александрина соответственно на 5 и 1,5 т/га. В 20172018 годах сорт Алиса успешно прошёл государственное сортоиспытание на 22 сортоучастках в трёх регионах России. One of the objectives of agriculture is to increase the production of animal feed, and improve their quality and nutritional value.A major role is played by annual forage crops like Sudan grass, which has good heat and drought tolerance,adaptability to soil conditions and stable yield. By 2018, 41 varieties of Sudan grass were included in the State Register of Breeding Achievements, 8 of which were recommended for the North Caucasian region. Modern varieties of Sudan grass can produce up to 4045 t ha1 of green mass per season (2 or 3 cuts). The existing range of Sudan grass varieties should be increased with new varieties that have better qualities. In this regard, the aim of the work was to create a midseason variety of Sudan grass with high adaptability, providing an increase in green mass yield by 24 t ha1. The studies were carried out at the State Scietific Establishment Agricultural Research Center Donskoy(SSE ARC Donskoy) in accordance with the Methodology of the State Commission for CropTesting . The new midseason variety of Sudan grass Alisa has been created. Plants are tall (up to 215 cm), well leafy (3545), have dry and fine stems (0.61.0 cm), and form up to 35 stems on the plant by the second cut. The variety is characterized by increased intensity of initial growth, fast regrowth after cutting and drought tolerance. The average yield of green mass in competitive trial was 42 t ha1, absolute dry matter yield was 10.8 t ha1, which exceeds the standard Alexandrina by 5 and 1.5 t ha1, respectively. During the years 20172018, Alisa successfully passed the State variety trial on 22 locations in 3 regions of Russia.

Author(s):  
Н.А. Ковтунова ◽  
В.В. Ковтунов ◽  
А.Е. Романюкин ◽  
Е.А. Шишова

Исследования проведены в 2015–2020 годах на опытном участке ФГБНУ «АНЦ «Донской», расположенном в зоне неустойчивого увлажнения в Зерноградском районе Ростовской области. Так как в последние годы в летний период здесь наблюдается сильная засуха, высокие температуры и неравномерное распределение осадков, многие культуры не способны обеспечить необходимое количество кормов. Поэтому возрос интерес к суданской траве. Данная культура является одной из самых засухоустойчивых, жаростойких, солевыносливых. По содержанию питательных веществ зелёная масса суданской травы не уступает однолетним кормовым культурам, содержит большое количество жира, клетчатки, БЭВ. В ФГБНУ «АНЦ «Донской» созданы и внесены в Государственный реестр селекционных достижений два сорта: Алиса (2019 год) и Грация (2020 год). Сорта допущены к использованию в Северо-Кавказском, Нижне-Волжском и Центрально-Чернозёмном регионах России, могут использоваться для возделывания на зелёный корм и сено. Цель данной работы — оценить морфологические, биологические и урожайные свойства новых сортов суданской травы Алиса и Грация, выделить их особенности и преимущества перед стандартом. Исследования проводились в трёхпольном севообороте. Предшественник — озимая пшеница. Установлено, что новые сорта характеризуются повышенной интенсивностью начального роста и послеукосного отрастания. Они отличаются высокой устойчивостью к поражению всеми видами головни, слабо поражаются бактериозом. Средняя урожайность составила: зеленой массы — 36 т/га (сорт Алиса) и 37 т/га (сорт Грация), абсолютно сухого вещества — 8,5 и 8,8 т/га соответственно, что превышало стандартный сорт Александрина соответственно на 5–6 и 0,7–1,0 т/га. The investigation was conducted at the Agricultural Research Center “Donskoy” in 2015–2020. The Center is located at the Zernograd district of the Rostov region. Severe drought, high temperature and water deficit significantly reduce productivity of many crops in summer. Therefore, cultivation of Sudan grass gained a lot of attention. This crop is highly resistant to drought, heat and salinity. Its green mass is rich in nutrients, fat, fiber and nitrogen-free extractive substances. The Center bred and registered two varieties: “Alisa” (2019) and “Gratsiya” (2020). Both genotypes are adapted to the North Caucasian, Lower Volga and Central Chernozem regions for green fodder and hay production. The aim was to evaluate morphology, biology and yield of these varieties and identify their benefits over the standard. Plants were cultivated under the three-field crop rotation after winter wheat. “Alisa” and “Gratsiya” showed high growth rate, resistance to various smut and bacterial diseases. “Alisa” produces 36 of green mass and 8.5 t ha-1 of absolutely dry matter on average, “Gratsiya” — 37 and 8.8 t ha-1, respectively, exceeding the standard variety “Aleksandrina” by 5–6 and 0.7–1.0 t ha-1.


2021 ◽  
Vol 7 (20) ◽  
pp. 202106
Author(s):  
Marcelo Cervo Chelotti ◽  
Rosa Maria Vieira Medeiros

CARTOGRAPHS OF VITICULTURE IN MINAS GERAIS: from South genesis to North expansionCARTOGRAFÍAS DE LA VITICULTURA EN MINAS GERAIS: de la génesis en el Sur a la expansión al NorteRESUMOO presente artigo tem como objetivo analisar a reorientação no deslocamento do padrão espacial do cultivo de uvas no estado de Minas Gerais, originalmente localizado no Sul, mas expandiu-se para o norte mineiro nas últimas décadas. Os procedimentos metodológicos centraram-se na revisão de literatura sobre a viticultura no Brasil, e na coleta em dados secundários na Pesquisa Agrícola Municipal/PAM/IBGE, nos Censos Agropecuários do IBGE, além do Banco de Dados de Uva, Vinho e Derivados/VITIBRASIL. Os mapas temáticos demonstraram a dinâmica da viticultura em Minas Gerais, evidenciando uma mudança no padrão espacial, ou seja, historicamente concentrada no sul do estado, mas verificamos no pós-1990 uma expansão geográfica para o norte, principalmente em direção ao Cerrado e vale do Rio São Francisco. O papel desempenhado pela pesquisa, na busca de novas técnicas para a viticultura em regiões tropicais, tem uma grande centralidade nesse processo, uma vez que estamos diante de um novo paradigma para a produção de uvas e vinhos.Palavras-chave: Viticultura; Regionalização; Geografia do Vinho; Minas Gerais.ABSTRACTThis article has the goal to analyze the reorientation in the displacement of the spatial pattern of grape cultivation in the state of Minas Gerais, originally located in the south, but has expanded to the north of Minas Gerais in recent decades. The methodological procedures focused on the literature review on viticulture in Brazil, and the collection of secondary data from the Municipal Agricultural Research/PAM/IBGE, the IBGE Agricultural Census, and the Grape, Wine and Derivatives Database/VITIBRASIL. Thematic maps showed the dynamics of viticulture in Minas Gerais, showing a change in the spatial pattern, that is, historically concentrated in the south of the state. Sao Francisco River. The role played by the research in the search for new techniques for viticulture in tropical regions has a great centrality in this process, since we are facing a new paradigm for the production of grapes and wines.Keywords: Viticulture; Regionalization; Wine Geography; Minas Gerais.RESUMENEl presente artículo tiene como objetivo analizar la reorientación en el desplazamiento del patrón espacial del cultivo de la uva en el estado de Minas Gerais, originalmente ubicado en el sur, pero se ha expandido al norte de Minas Gerais en las últimas décadas. Los procedimientos metodológicos se centraron en la revisión de la literatura sobre viticultura en Brasil, y en la recopilación de datos secundarios en la Investigación Agrícola Municipal/PAM/IBGE, en los Censos Agrícolas del IBGE, además de la Base de Datos de Uva, Vino y Derivados/VITIBRASIL. Los mapas temáticos demostraron la dinámica de la viticultura en Minas Gerais, mostrando un cambio en el patrón espacial, es decir, históricamente concentrado en el sur del estado, pero en la década de 1990 verificamos una expansión geográfica hacia el norte, principalmente hacia el Cerrado y Vale do Río São Francisco El papel desempeñado por la investigación, en la búsqueda de nuevas técnicas para la viticultura en las regiones tropicales, tiene una gran centralidad en este proceso, ya que nos enfrentamos a un nuevo paradigma para la producción de uvas y vinos.Palabras-clave: Viticultura; Regionalización; Geografía del Vino; Minas Gerais.


2021 ◽  
pp. 46-50
Author(s):  
G. Ya. Krivosheev ◽  
N. А. Shevchenko

The directions of the economic use of maize are different, namely fodder, food, technical. Considering that maize belongs to mesophytes, the most harmful stress factor for it is drought. The breeding maize for drought tolerance is considered the most important direction for this crop. The purpose of the current paper was to present study results of the drought resistance of the initial material, namely the self-pollinated maize lines and hybrids. The study was carried out at the Agricultural Research Center “Donskoy”, located in the zone of insufficient moisture in 2018–2020. Drought tolerance was determined by the method of residual water deficit (RWD). As an initial material, there were used 24 self-pollinated maize lines and 50 test-cross hybrids. There have been identified the new drought-resistant middle-early and middle-ripening self-pollinated lines ‘KS 317 A’,’ KV 240’, ‘LSh 16’, ‘S 86’, ‘LSh 17’ and ‘LSh 2’, ‘SP 246 / 276-2’, ‘DS 498 / 203-4’, ‘DS 298 / 203-3’, ‘DS 257 / 85-0’, ‘SP 280-3’, ‘KB 373’, which had a low residual water deficit in the flowering phase (7.7–10.4%) and did not significantly increase it during the period from vegetation to milky-wax ripeness (up to 10,3–12.6%). The drought-resistant hybrids include ‘Stepnyak MV’, ‘GK 26 AM × DS 257 / 85-0’, ‘P 101 × Zp 498 A’, ‘KB 399 × S 232’, ‘GK 26 AM × KB 373’, ‘GK 26 AM × SP 246 / 276-2’, ‘C 204 × KS 318’. They were characterized by a low water deficit during the flowering period (7.4–10.4%) and its low increase (1.4–3.7%) during the growing season. Drought-resistant hybrids, as a rule, included drought-resistant lines. According to the results of the State Variety Testing, the new middle-ripening three-line maize hybrid ‘Stepnyak MV’ ((KB 262 M × KB 326 ZM) × KB 498 MV)), developed on the basis of the drought-resistant lines ‘KB 262 M’ and ‘KB 498 MV’, has been included into the State Register since 2019. The hybrid possessed a high grain yield (4.55 t/ha) in the dry years of 2018–2020. it was characterized by high values of the main economically valuable traits, such as high resistance to lodging (0.5% of lodged plants), high starch content in grain (72.0%), optimum grain moisture (14.0%) by the harvesting time.


2019 ◽  
pp. 42-46 ◽  
Author(s):  
S. A. Ignatiev ◽  
А. А. Regidin ◽  
T. V. Grayzeva ◽  
K. N. Goryunov

Alfalfa is the most valuable forage crop spread all over the world. Due to the varietal diversity of alfalfa in the countries of North America, the laboratory of breeding and seed-growing of perennial grasses of the FSBSI “Agricultural Research Center “Donskoy” conducted the experiments over 27 samples of American and Canadian breeding to find genetic sources of economic and biological traits. The field trials were conducted according to generally accepted methods for forage crops in 2016–2018. The area of experimental plots was 1 m2 with double sequence. The period “beginning of spring germination” and “beginning of flowering” were studied depending on the climatic conditions of the year. In 2016 and 2017 spring germination took place in March, and in 2018 it was in the 1-st decade of April. Beginning of flowering in the studied samples ranged from the 3-d decade of May to the 1-st decade of June. On average, over 3 years, the number of days in the period “beginning of spring germination – beginning of flowering” varied from 68 to 73 days. This period of the standard variety was 72 days. The studied samples had this period on 1–4 days shorter, excluding the samples “K-33299” and “K-42249” (73 days). According to the yield of green mass, none of the samples reliably exceeded the standard variety “Rostovskaya 90” (3.29 kg/m2). The studied alfalfa samples formed 1.57–3.5 kg/m2 of green mass. According to the plant foliage amount, the indicators of the studied samples varied from 42 to 49%. The samples “K-33299” and “K-43272” with 49% of foliage amount slightly exceeded the standard variety “Rostovskaya 90” (48%). The hay yield of the studied samples varied from 31 to 40%, “K-43272” formed the smallest indicator (31%), “K-42249” and “K-45715” (40%) produced the largest amount and when the hay productivity of the standard variety was 35%. There have been identified reliable correlations between the yield of green mass and hay, as well as between the yield of green mass and the number of days during the period “beginning of spring germination – beginning of flowering”.


2020 ◽  
pp. 44-48
Author(s):  
A. V. Alabushev

Sorghum is one of the most important crops in all arid tropical and subtropical regions of Africa, Asia, and Central America. In the Russian Federation, the sowing area of sorghum varied from 8.7 to 228.6 thousand ha throughout about 20 years (1999–2018). The main share (93–98%) of the sowing area of sorghum in Russia is located in the Pre-Volga region and the Southern Federal District. The Rostov Region as a part of the Southern Federal District accounts for up to 46–69% of sorghum crops (Kovtunov, 2018). The most effective way to increase productivity and product quality is to create new varieties adapted to the soil and climatic conditions of cultivation and introduce them into agricultural production. The FSBSI “Agricultural Research Center “Donskoy” developed the white-kernelled sorghum varieties “Velikan”, “Zernogradskoye 88” and “Ataman” with 5.41–5.85 t/ha of productivity not only for fodder, but also for food (starch, alcohol). The sweet sorghum varieties “Listvenit”, “Yuzhnoye” and “Feniks” with green mass productivity of 38–46 t/ha are intended for use on green fodder and silage and are characterized by intensive initial growth, lodging resistance, drought resistance, resistance to dust smut, bacteriosis and to cereal aphids. The Sudan grass varieties “Anastasiya”, “Alisa” and “Gratsiaya” developed in the Agricultural Research Center “Donskoy” are characterized by the intensive initial growth and regrowth. They are middle-ripening, drought tolerant, highly productive with 41–44 t/ha of green mass and 8.3–8.6 t/ha of dry matter. There have been developed and are being tested the promising sorghum-Sudan hybrids with 62–77 t/ha of green mass and 11.4–16.6 t/ha of dry matter obtained in mowing the aftermath.


2021 ◽  
pp. 28-33
Author(s):  
Yuri Nikolaevich Pleskachev ◽  
Julia Alexandrovna Laptina ◽  
Olga Gennadievna Gichenkova ◽  
Natalya Alexandrovna Kulikova

Increasing the productivity and quality of forage crops is a necessary condition for creating a solid feed base that will ensure the full feeding of farm animals. The paper considers the results of studies on the influence of mineral fertilizers and pre-sowing seed treatment with Raikat Start on the production processes of the Sudan grass of the Julia variety on chestnut soils in the Lower Volga region. It was found that the highest yield of green mass of Sudan grass 28.6 t / ha was formed on the variant with the introduction of mineral fertilizers at a dose of N120 P120 K90 + N30 and the growth stimulator Raikat Start, the increase to the control was 9.3 t / ha. This variant also showed a decrease in the fiber content and an increase in the proportion of pro-tein from 7.05 % in the first cut to 8.28 % in the third cut. The application of mineral fertilizers in the studied dose provided a green mass of Sudan grass that was safe for agricultural animals with a nitrate content of no more than 407 mg/kg.


Plant Disease ◽  
2021 ◽  
Author(s):  
Li Kemei ◽  
Hu Wenjing ◽  
XiaoLi Dou ◽  
JunXing Fan ◽  
Hanli Yang

Alfalfa (Medicago sativa L.) is widely planted in the world as one of the most important leguminous forage crops, and it is also the first choice of forage crops for animal feed in Xinjiang. In June 2018, alfalfa plants with typical anthracnose symptoms were observed in 75% of alfalfa fields in Hutubi County, Xinjiang, China. The disease usually occurred in alfalfa fields that had been planted for more than 2 years and was distributed in patches in the field. The incidence rate ranged from 7.5% to 53%, and the fatality rate ranged from 0 to 3%. Greater incidence was observed in fields with older stands. At the early stage of disease, pale brown prismatic or oval sunken lesions with dark brown to black edges were observed at the base of the stem of alfalfa plants. As the symptoms progressed, lesions on stems turned necrotic, and the center of the lesion became gray-white with black dots. In severe cases, the lesion expanded around the stem, causing the upper part of the stem to break off, or wilt and die. Twenty plant stem sections with typical symptoms were sampled and surface-sterilized with 75% ethanol for 30 s and 1% NaClO for 1 min, rinsed in sterilized distilled water, dried on sterilized filter paper for 45 s, placed on potato dextrose agar (PDA), and incubated in the dark at 25°C for 7 days. A fungus was frequently isolated from the surface-sterilized segments, and the colonies of this fungus were white and flat at first, and later the center of colonies became pale brown with black microsclerotia (2.0~3.2 mm. n = 30) and white or brown acervuli (1.0~1.8 mm. n = 30). A large number of conidia and setae spread from ruptured microsclerotia under microscopy. Conidia (n = 40) were hyaline, smooth-walled, straight, aseptate, cylindrical to fusoid, both tips acute to round, 13.7 to 19.5×3.0 to 4.5 μm . Setae (n = 30) were dark brown to black, smooth-walled, 3~6 septate, straight or slightly curved, 66.9~185.1 μm long, tip round and base swollen, 3.9~5.2 μm width. Sometimes setae formed directly on hyphae or brown acervuli. Colony and conidia morphology were similar to the description of Colletotrichum americae-borealis (Damm et al. 2014; Lyu et al. 2020). DNA was extracted from fresh mycelia of three representative isolates (R11, R12 and R13) and the ITS, ACT, CHS-1 and HIS3 genes of three isolates were amplified and sequenced using the primers described previously by Damm et al. (2014). The sequences of three isolates were identical, and twelve aligned sequences from three representative isolates were deposited in GenBank (MT877442, MT877443 and MT877444 for ITS, MW854350, MW854351 and MW854352 for ACT, MW270930, MW270931 and MW270107 for CHS-1, MW854347, MW854348 and MW854349 for HIS3). Sequence analysis revealed that the ITS, ACT, CHS-1 and HIS3 sequences of three representative isolates were shared 99% (355/356 bp for HIS3) to 100% (550/550 bp for ITS, 261/261 bp for ACT, 221/221 bp for CHS-1) identities to each sequence of an American strain (CBS 136232) of C. americae-borealis from alfalfa in GenBank (NR160760 for ITS, KM105434 for ACT, KM105294 for CHS-1, KM105364 for HIS3). Four phylogenetic trees were constructed by the Mrbayes method (Damm et al. 2014), and the result showed that three representative isolates grouped with C. americae-borealis. Combined with morphological observation and molecular biological identification, the pathogen was identified as C. americae-borealis. Pathogenicity tests were executed twice on alfalfa seedlings in a greenhouse. Pots containing ten 40-day old seedlings (Xinjiang daye) were sprayed with a 100 ml of condial suspension (10^6 condia/ml) of R11. Control pots were sprayed with 100 ml of sterile distilled water. Two weeks after inoculation under greenhouse conditions (25 ± 2°C, 12-h photoperiod, 85% humidity), brown spots and necrotic lesions developed on the stem of inoculated alfalfa seedlings, which were similar to disease plants in fields, and C. americae-borealis was reisolated from symptomatic tissue. The control seedlings remained symptomless. Anthracnose caused by C. americae-borealis was reported on alfalfa in the north region of America and Iran (Damm et al. 2014; Alizadeh et al. 2015), as well as Gansu, Inner Mongolia, Yunnan and Heilongjiang Province of China ( Xu. 2019; zhang et al. 2020) . To our knowledge, this is the first report of Colletotrichum americae-borealis causing Alfalfa Anthracnose in Xinjiang, China. This finding can provide an important reference for understanding the distribution and control of this disease.


2020 ◽  
Vol 50 (4) ◽  
pp. 32-39
Author(s):  
O. T. Andreeva ◽  
N. G. Pilipenko ◽  
L. P. Sidorova ◽  
N. Yu. Kharchenko

The results of research (2016-2018) into productivity, adaptability and nutritional value of poaceous crops (forage millet, Sudan grass) and legumes (fodder beans, spring vetch, garden peas) are presented and analyzed. The research was conducted on meadow chernozem mealy-carbonate soil, light loam by granulometric composition, in the forest-steppe zone of Trans-Baikal Territory. Agricultural technology used for fodder crop cultivation was common for this area. The objects of the research were legumes (Sibirskiye forage beans, Novosibirskaya spring vetch, Holik garden peas), and poaceous varieties (Bystroe forage millet, Novosibirskaya 84 Sudan grass). The experimental work was carried out in accordance with the generally accepted guidelines for field experiments. All the forage crops under study have formed a fairly high productivity: the yield of green mass was 13.0-18.2 t/ha, dry matter – 2.6-3.2, feed units – 2.2-2.7 t/ha, digestible protein – 220-567 kg/ha, gross energy – 26.5-32.2 GJ/ha, with availability of digestible protein 100-210 g per one feed unit. Among leguminous crops, spring vetch and fodder beans had an advantage with the green mass yield of 13.3-15.0 t/ha, the amount of dry matter of 3.1-3.2, feed units of 2.6-2.7 t/ha, digestible protein 494–567 kg/ha, gross energy 32.0–32.2 GJ/ha, with availability of digestible protein of 190–210 g per one feed unit. Garden peas were inferior to spring vetch and fodder beans in yield by 2.3-13.3%, dry matter – by 9.6-12.5, feed units – by 3.8-7.4, digestible protein – by 4.9-17.1, gross energy – by 8.1–8.7%. Among poaceous crops, agrocenoses of Sudan grass had an advantage in productivity and nutritional value. They formed the yield of green mass 18.2 t/ha, the amount of dry matter 3.1, feed units 2.5 t/ha, digestible protein 300 kg/ha, gross energy 31.3 GJ/ha, with availability of digestible protein of 120 g per one feed unit. Fodder millet was inferior to Sudan grass in all respects by 12.0–26.7%, respectively.


Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.


2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.


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