scholarly journals Compatibility Test and Agronomic Performance of Coffee Genotypes (Coffea canephora Pierre ex Froehner) in the State of Rondônia, Brazil

2019 ◽  
Vol 11 (15) ◽  
pp. 162
Author(s):  
Douglas Revesse da Silva ◽  
Diogenes Revesse da Silva ◽  
João Batista Dias Damaceno ◽  
Reginaldo Almeida de Andrade ◽  
Cleiton Gonçalves Domingues ◽  
...  
Keyword(s):  
Average Distance ◽  
Average Diameter ◽  
Coffea Canephora ◽  
The State ◽  
Agronomic Performance ◽  
Self Incompatibility ◽  
Compatibility Test ◽  
Self Pollination ◽  
Coffee Plants

The objective of this work was to evaluate the degree of compatibility and agronomic performance in clonal genotypes of canephora coffee plants (Coffea canephora ex Froehner) for cultivation in the state of Rondônia, Brazil. The study was conducted with nine genotypes with three replications of Coffea canephora Arranged in the field: UFRO-60; UFRO-31; UFRO-61; UFRO-25; UFRO-03; UFRO-08; UFRO-21; UFRO-05 and UFRO-138 In adulthood and in two years of harvest (2013/2014 and 2014/2015). We evaluated: productivity, profitability, conversion index fruit cherry/grain benefited, mass of one hundred grains benefited, average diameter of the fruits, number of rosettes per branch, average distance between rosettes and number of fruits per rosette. Additionally, the degree of compatibility between the clones of clonal. The genotypes of Coffea canephora with the best agronomic performances evaluated for the edafoclimatic conditions of the State of Rondônia in this study were UFRO-08, UFRO-25, UFRO-03 and UFRO-138. According to the compatibility tests, the sequence of correct disposition in the field of Coffea canephora among the genotypes studied in this study are: UFRO-138; UFRO-31; UFRO-25; UFRO-08; UFRO-60; UFRO-21; UFRO-61; UFRO-03 and; UFRO-05. Close to 74% of the tests Were and self-pollination tests resulted in low fruiting, evidencing the characteristic of self-incompatibility.

scholarly journals Cytological Observation and Transcriptome Comparative Analysis of Self-Pollination and Cross-Pollination in Dendrobium Officinale

Genes ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 432
Author(s):  
Yaling Chen ◽  
Benchang Hu ◽  
Fantao Zhang ◽  
Xiangdong Luo ◽  
Jiankun Xie
Keyword(s):  
Pollen Tubes ◽  
The Self ◽  
Dendrobium Officinale ◽  
Self Incompatibility ◽  
Related Gene ◽  
Cytological Observation ◽  
Lectin Receptor ◽  
Cross Pollination ◽  
Self Pollination ◽  
Medicinal Value

Dendrobium officinale is a rare and traditional medicinal plant with high pharmacological and nutritional value. The self-incompatibility mechanism of D. officinale reproductive isolation was formed in the long-term evolution process, but intraspecific hybridization of different germplasm resources leads to a large gap in the yield, quality, and medicinal value of D. officinale. To investigate the biological mechanism of self-incompatibility in D. officinale, cytological observation and the transcriptome analysis was carried out on the samples of self-pollination and cross-pollination in D. officinale. Results for self-pollination showed that the pollen tubes could grow in the style at 2 h, but most of pollen tubes stopped growing at 4 h, while a large number of cross-pollinated pollen tubes grew along the placental space to the base of ovary, indicating that the self-incompatibility of D. officinale may be gametophyte self-incompatibility. A total of 63.41 G basesum of D. officinale style samples from non-pollinated, self-pollination, and cross-pollination by RNA-seq were obtained, and a total of 1944, 1758, and 475 differentially expressed genes (DEGs) in the comparison of CK (non-pollinated) vs. HF (cross-pollination sample), CK vs. SF (self-pollination sample) and SF vs. HF were identified, respectively. Forty-one candidate genes related to self-incompatibility were found by function annotation of DEGs, including 6 Ca2+ signal genes, 4 armed repeat containing (ARC) related genes, 11 S-locus receptor kinase (SRK) related genes, 2 Exo70 family genes, 9 ubiquitin related genes, 1 fatty acid related gene, 6 amino acid-related genes, 1 pollen-specific leucine-rich repeat extensin-like protein (LRX) related gene and 1 lectin receptor-like kinases (RLKs) related gene, showed that self-incompatibility mechanism of D. officinale involves the interaction of multiple genes and pathways. The results can provide a basis for the study of the self-incompatibility mechanism of D. officinale, and provide ideas for the preservation and utilization of high-quality resources of D. officinale.

Pollen flow in distylous populations of Amsinckia (Boraginaceae)

1976 ◽  
Vol 54 (22) ◽  
pp. 2530-2535 ◽  
Author(s):  
Fred R. Ganders
Keyword(s):  
Pollen Flow ◽  
Progeny Testing ◽  
Self Incompatibility ◽  
Disassortative Mating ◽  
Pollen Loads ◽  
Self Pollination ◽  
Incompatibility System ◽  
Total Pollen

Stigmatic pollen loads were analyzed from naturally pollinated pin and thrum form flowers of Amsinckia douglasiana and A. vernicosa var. furcata. Pin stigmas captured more total pollen than thrum stigmas. Pins experienced either net self-pollination or random pollination. Thrum stigmas experienced significant disassortative pollination. Comparing pollen loads from intact and emasculated thrum flowers of A. douglasiana indicated that self-pollination and geitonogamy were relatively unimportant in the pollination of the thrum form. The level of disassortative pollination of A. vernicosa var. furcata does not appear to be high enough to account for the level of disassortative mating observed by progeny testing, suggesting that this species may possess an incomplete stylar self-incompatibility system such as has been reported in A. grandiflora.

scholarly journals Potencial de Formigas (Hymenoptera: Formicidae) como Agentes Anti-herbívoros em Cultivo de Café (Coffea canephora Pierre) e Feijão Guandu [Cajanus cajans (L.) Millsp]

2013 ◽  
Vol 6 (2) ◽  
pp. 113-118 ◽  
Author(s):  
Leandro Xavier Teixeira Chevalier ◽  
Diego Silva Gomes ◽  
Antonio José Mayhé-Nunes ◽  
Jarbas Marçal Queiroz
Keyword(s):  
Coffea Canephora ◽  
Pigeon Pea ◽  
Sugar Solution ◽  
Foraging Activity ◽  
Organic Management ◽  
Coffee Plants

Este trabalho analisou a variação no potencial das formigas como agentes anti-herbívoros em plantas de café (Coffea canephora Pierre) e guandu [Cajanus cajans (L.) Millsp]. Foram usados ovos artificiais, simulando a presença de insetos herbívoros, e solução de açúcar, para aumentar a atividade de formigas, em experimentos de campo. As plantas de café e de guandu possuíam diferentes níveis de atividade de formigas, pois as últimas eram atacadas por membracídeos que atraíam mais formigas. A atividade das formigas foi monitorada após aplicação de solução de açúcar e a remoção de ovos artificiais foi medida após 24 e 48 horas. A solução de açúcar aumentou significativamente a atividade de formigas em plantas de café e de guandu. A remoção dos ovos artificiais foi significativamente maior em ramos com formigas do que sem formigas para as plantas de guandu. A adição de solução de açúcar aumentou a remoção de ovos artificiais em plantas de guandu, mas não em plantas de café. O tratamento com solução de açúcar e a presença de membracídeos em guandu tiveram efeitos similares sobre a atividade de formigas. Este estudo mostrou que a aplicação de solução de açúcar pode ser utilizada para simular a presença de membracídeos sobre as plantas, aumentando a atividade de formigas. Isso permitiu a avaliação de seu potencial como agentes anti-herbívoros, através de experimentos que simulam a presença de insetos sobre as plantas. Potential of Ants (Hymenoptera: Formicidae) as Anti-herbivore Agents in Cultivation of the Coffee (Coffea canephora Pierre) and Pigeon Pea [Cajanus cajans (L.) Millsp] Abstract. This study analyzed the role of ants as anti-herbivore agents in Coffee (Coffea canephora Pierre) and Pigeon Pea [Cajanus cajans (L.) Millsp] plants in agroecosystem under organic management. In these plants we used artificial eggs and sugar solution in experiments that simulated the presence of herbivore insects. Coffee plants did not possess any natural attractive that could intensify foraging activity of ants, but pigeon pea plants were infested by treehoppers which attracted ants. Activity of ants was surveyed after sugar solution application and artificial eggs removal was measured 24 and 48 h after start of the experiments. Sugar solution sprinkled on plants foliage increased significantly the activity of ants on coffee and pigeon pea plants. The removal of artificial eggs was significantly greater in branch with ants than without ants for pigeon pea plants. The sugar solution addiction resulted in greater artificial eggs removal in pigeon pea plants, but not in coffee plants. The treatment with sugar solution and presence of treehoppers had similar effects on the activity of ants on the plants. This study showed that the application of sugar solution can be used to increase activity of ants on plants as well as the potential of ants as anti-herbivore agents can be evaluated in experiments that simulate the presence of insects on the plants.

scholarly journals New Records of Mealybugs (Hemiptera: Pseudococcidae) Infesting Rosettes of Conilon Coffee Plants in the State of Rondônia, South-Western Amazon, Brazil

2018 ◽  
Vol 101 (4) ◽  
pp. 705
Author(s):  
Vando Miossi Rondelli ◽  
Ana Lúcia Benfatti Gonzalez Peronti ◽  
Jairo Rafael Machado Dias ◽  
Isac Fogaça ◽  
Inácio Lucas Venâncio Dos Santos ◽  
...  
Keyword(s):  
New Records ◽  
The State ◽  
Coffee Plants

Hand-Tripped Flowers Promote Seed Production in Arachis lignosa, a Wild Peanut1

1990 ◽  
Vol 17 (1) ◽  
pp. 22-24 ◽  
Author(s):  
Donald J. Banks
Keyword(s):  
Seed Production ◽  
Growth Chamber ◽  
Self Incompatibility ◽  
Self Pollination ◽  
Reproductive Sterility ◽  
High Degree

Abstract In trials conducted in the greenhouse, growth chamber, and outdoors, no pegs or pods were produced when A. lignosa (Chod. et Hassl.) Krap. et Greg. nom. nud. plants were allowed to pollinate naturally. However, hand tripping flowers, especially in the greenhouse, resulted in significant increases in pod production. The results suggest that the high degree of reproductive sterility usually noted for A. lignosa in culture is due to pollination failure rather than to physiological self incompatibility. The somewhat truncated shape of the stigma and its elevated position relative to the anthers probably restricts natural self-pollination without the aid of pollinating vectors such as bees.

Electrophoretic evidence supporting self-incompatibility in Lotus corniculatus

1980 ◽  
Vol 58 (6) ◽  
pp. 712-716 ◽  
Author(s):  
Shirley Dobrofsky ◽  
W. F. Grant
Keyword(s):  
Gel Electrophoresis ◽  
Seed Set ◽  
Polyacrylamide Gel Electrophoresis ◽  
Lotus Corniculatus ◽  
Polyacrylamide Gel ◽  
Self Incompatibility ◽  
Banding Patterns ◽  
Protein Subunits ◽  
Self Pollination

Self-incompatibility, a prefertilization event, and self-sterility, a postfertilization event, have both been suggested as causes for differences in seed set between cross- and self-pollinated florets in Lotus corniculatus L. Ovary protein subunits of selfed, crossed, and unpollinated florets of L. corniculatus cv. Mirabel were studied using polyacrylamide gel electrophoresis. Banding patterns differed for all three conditions. Ovary protein differences were found prior to the time fertilization is known to occur, thereby providing evidence that self-incompatibility is at least partially responsible for the reduced seed set after self-pollination.

scholarly journals AGRONOMIC PERFORMANCE OF COWPEA ELITE LINES IN THE STATES OF MINAS GERAIS AND MATO GROSSO, BRAZIL

2018 ◽  
Vol 31 (1) ◽  
pp. 90-98 ◽  
Author(s):  
VANET BATISTA DE SOUZA ◽  
ABNER JOSÉ DE CARVALHO ◽  
KAESEL JACKSON DAMASCENO-SILVA ◽  
MAURISRAEL DE MOURA ROCHA ◽  
MARLON LOPES LACERDA ◽  
...  
Keyword(s):  
Growth Habit ◽  
Block Design ◽  
Minas Gerais ◽  
Northern Region ◽  
The State ◽  
Good Growth ◽  
Agronomic Performance ◽  
Mato Grosso ◽  
Plant Growth Habit ◽  
Bean Yield

ABSTRACT The objective of this work was to evaluate the agronomic performance of erect and semi-erect cowpea elite lines grown in the States of Minas Gerais and Mato Grosso, Brazil. The experiments were conducted in Jaíba, Janaúba, Sete Lagoas (Minas Gerais), Primavera do Leste and Nova Ubiratã (Mato Grosso), with 20 genotypes of cowpea, arranged in a randomized block design with four replications. The data were subjected to individual and joint analyses of variance and means grouped by the Scott-Knott test (p<0.05). The plant growth habit, lodging, cultivation value, pod length and bean yield were evaluated. The lines MNC04-768F-21 and MNC04F-795F-168 had the highest bean yield in the experiments conducted in Mato Grosso, and their growth habit, lodging and cultivation value were similar to those of the cultivar BRS-Guariba. The lines MNC04-769F-30, MNC05-795F-154 and MNC04-769F-49 and the cultivar BRS-Tumucumaque had the highest bean yield in the experiments conducted in Minas Gerais. However, the cultivars BRS-Guariba, BRS-Tumucumaque, BRS-Novaera, BRS-Itaim and BRS-Cauamé and the lines MNC04-792F-143 and MNC04-792F-144 showed satisfactory bean yield and good growth habit, plant lodging and cultivation value in the State of Minas Gerais, especially in the northern region of the state (Jaíba and Janaúba), representing good alternatives for the genotypes recommended for this region.

scholarly journals Combination of Mycorrhizal Symbiosis and Root Grafting Effectively Controls Nematode in Replanted Coffee Soil

Plants ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 555 ◽  
Author(s):  
The Trinh Pham ◽  
Bach Long Giang ◽  
Ngoc Hoi Nguyen ◽  
Pham Nguyen Dong Yen ◽  
Vo Do Minh Hoang ◽  
...  
Keyword(s):  
Survival Rate ◽  
Coffea Canephora ◽  
Mycorrhizal Symbiosis ◽  
Poor Survival ◽  
Soil Pathogens ◽  
Coffee Plants ◽  
Survival And Growth ◽  
Combined Technique ◽  
Growth Indicators ◽  
Better Than

Replanting for sustainable development is one of the critical missions of the coffee industry in the Daklak province, Vietnam. However, this plan has been faced with many difficulties including poor survival and growth rates due to the low nematode tolerance of young coffee plants in replanted fields. Mycorrhizal symbiosis and grafting have been applied separately but not yet resulted in the expected results of the replanting plan. Whether the combination of them would help managing nematode in the soil and consequently enhance the replanted efficiency is largely unknown. Mycorrhizal symbiosis was applied to Coffea canephora plants or/and grafted onto Coffea liberica rootstock, which were grown and compared to the untreated ones in both net-house-pots and the replanted plantation. The survival rate, growth indicators and the soil pathogens were monitored during the experimental periods. The combination of grafting and mycorrhiza symbiotic techniques significantly decreased the nematode densities in the replanted soil. As a result, the survival rate and growth indicators of the coffee in the replanted soil treated by the combined technique were better than treated by the two separate techniques. The results suggested that the combination of grafting and mycorrhiza symbiotic techniques would propose a potentially effective Pratylenchus coffeae and Meloidogyne incognita nematode management in replanted coffee fields in the Daklak province, Vietnam.

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