scholarly journals Ecology of onions in Transbaikalia

2021 ◽  
Vol 20 (1) ◽  
pp. 195-197
Author(s):  
O. I. Zhapova ◽  
T. P. Antsupova
Keyword(s):  
Cross Section ◽  
Leaf Blade ◽  
Morphological Structure ◽  
Light Conditions ◽  
Ecological Plasticity ◽  
Number Of Leaves ◽  
Growing Conditions

The article presents the results of studying the influence of growing conditions on the morphological andanatomical features of representatives of the genus Allium. The study concluded that xeromesophytic and mesoxerophyticspecies have high ecological plasticity. Within a species, a difference in anatomical and morphological structure can beobserved, depending on the conditions of germination. Growing conditions affect the number of leaves and the shape ofthe leaf cross-section, the degree of development of chlorenchyma, depending on the light conditions, and the location ofthe conductive bundles in the leaves. The height of the peduncle, the length of the leaf blade, the number of flowers in theinflorescence vary depending on the growing conditions.The article presents the results of studying the influence of growing conditions on the morphological andanatomical features of representatives of the genus Allium. The study concluded that xeromesophytic and mesoxerophyticspecies have high ecological plasticity. Within a species, a difference in anatomical and morphological structure can beobserved, depending on the conditions of germination. Growing conditions affect the number of leaves and the shape ofthe leaf cross-section, the degree of development of chlorenchyma, depending on the light conditions, and the location ofthe conductive bundles in the leaves. The height of the peduncle, the length of the leaf blade, the number of flowers in theinflorescence vary depending on the growing conditions.

scholarly journals The impacts of different habitats on the development of Telekia speiosa (Schreb.) Baumg.

2010 ◽  
Vol 16 (5) ◽  
Author(s):  
J. Csabai ◽  
Z. Nagy ◽  
A. Tilly Mándy
Keyword(s):  
Leaf Blade ◽  
Morphological Changes ◽  
Light Conditions ◽  
Relict Species ◽  
Leaf Production ◽  
Ecological Conditions ◽  
Mean Width ◽  
Number Of Leaves ◽  
The Mean ◽  
Species Specific

Telekia speiosa (Schreb.) Baumg. is a 100-150 cm high bushy perennial, which has yellow flowers and smells good. According to the descriptions (Farkas, 1999), it can be detected in two smaller areas within Hungary, namely in the Bükk hills and on the Szatmár-Bereg Plain. By the time of writing this paper, the population around Tiszabecs has already got extinct. Therefore, it is a protected relict species. It is named in honour of Sámuel Teleki, chancellor of Transylvania.Within the frame of the experiment, the Telekia speciosa (Schreb.) Baumg. was planted to places differently illuminated (sunny, semi shadow, shade), then the morphological changes brought about the various light conditions were investigated. The experiment was launched with a stock sown in October 2008. The seedlings were planted to three beds with diverse light conditions. The area of each bed was 1 m2, and ten seedlings were planted per m2. The parameters investigated are as follows: the length of leaf blade, the width of leaf blade, the length of petiole, the number of leaves per plant, and the alterations of leaves. As a result of our research, we can state that semi shadow is the optimal habitat for the plant. Under such ecological conditions the highest leaf production was observed, the leaves were species specific, healthy and big. The mean number of leaves per plant was 6.6, the mean length of blade was 16.6 cm, the mean width of blade was 13 cm, while the mean length of petiole was 14.2 cm. In the shade the plants grew poorly and the size of leaves were smaller. The mean number of leaves per plant was 4.1, the mean length of blade was 8.6 cm, the mean width of blade was 7.1 cm, and the mean length of petiole was 9.4 cm. In the sunny habitat a similarly high leaf production was observed as in the semi shadow; however, the leaves had brownish spots, they shriveled, feel rough, so they revealed a reduced aesthetical value. The mean number of leaves per plant was 6.6, the mean length of blade was 17.8 cm, the mean width of blade was 11.3 cm, and the mean length of petiole was 13.1 cm.

Early spring and late autumn response to applied nitrogen in four grasses

1980 ◽  
Vol 94 (2) ◽  
pp. 443-453 ◽  
Author(s):  
D. Wilman ◽  
A. A. Mohamed
Keyword(s):  
Perennial Ryegrass ◽  
Leaf Blade ◽  
Unit Area ◽  
Total Yield ◽  
Early Spring ◽  
Late Winter ◽  
Number Of Leaves ◽  
Four Levels ◽  
Leaf Extension ◽  
Applied Nitrogen

SummaryThe regrowth of Aberystwyth S. 23 perennial ryegrass, S. 24 perennial ryegrass, S. 59 red fescue and S. 170 tall fescue was studied in field swards, comparing four levels of applied nitrogen, for 8 weeks following a clearing cut. The clearing cuts were in mid-October, mid-February and mid-March in each of 3 years, different plots being used on each occasion.The application of N increased the number of leaf primordia, the number of un-emerged leaves, the rate of leaf emergence and death, leaf blade length, width and weight, sheath length, number of leaves per unit area of ground and proportion of green tissue in total yield. The application of N had little effect on the number of leaves per tiller and tended to reduce weight per unit area of leaf blade. The increase in size, weight and number of leaf blades appeared to be major reasons for the positive effect of applied N on yield, previously reported; and the increase in sheath length contributed to the increase in proportion of yield above 4 cm. Rate of leaf extension was not closely related to yield and was more sensitive to temperature than was yield. Changes during regrowth in blade and sheath length helped to explain changes in weight per tiller, previously reported. The effects of improving weather conditions in late winter/early spring were similar to the effects of applied N: larger, heavier leaf blades, longer sheaths, a taller canopy, a lower proportion of dead material, younger leaves. The length of shoot apex per leaf primordium was relatively constant. Leaves continued to emerge, at a slow rate, in the period December–February. S. 170 had the biggest leaves, particularly in May, and the slowest rate of leaf turnover. Rate of leaf extension was increased by applied N more, on average, in the ryegrasses than in the fescues.

scholarly journals Assessment of the adaptive potential of Belarusian potato varieties in the Chelyabinsk region

2021 ◽  
Vol 207 (04) ◽  
pp. 17-23
Author(s):  
Aleksandr Vasiliev ◽  
Tamara Dergileva ◽  
Vasiliy Dergilev
Keyword(s):  
Classical Method ◽  
Neutral Type ◽  
Wide Distribution ◽  
South Urals ◽  
Adaptive Potential ◽  
The South ◽  
Potato Varieties ◽  
Ecological Plasticity ◽  
Growing Conditions ◽  
Chelyabinsk Region

Abstract. The purpose of the research is to assess the Belarusian potato varieties in terms of adaptability, ecological plasticity and stability. To establish the possibility of their cultivation in the conditions of the Chelyabinsk region. Research methods. The assessment of the adaptive potential of potatoes was carried out according to the classical method presented by V. A. Zykin. Results. Allocated 21 adaptive varieties suitable for cultivation in the South Urals. Analysis of ecological plasticity and stability showed that these qualities are combined in Belarusian varieties: Briz (35.7 t/ha; bi = 0.86; Si2 = 7.4), Manifest (35.4 t/ha; 0.92; 7.8), Pershatsvet (34.4 t/ha; 1.20; 29.2), Palats (33.2 t/ha; 1.08; 25.8), in domestic varieties: Spiridon (32.1 t/ha; 1.04; 0.3) and Irbitskiy (33.1 t/ha; 0.81; 23.5), as well as in the Gala variety (38.4 t/ha; 0.98; 2.2) created in Germany. Genotypes of the intensive type include the Chelyabinsk varieties: Tarasov (40.3 t/ha; bi = 1.89) and Zakhar (38.0 t/ha; 1.28), the Belarusian variety Uladar (36.8 t/ha; 1.64) and foreign varieties: Koroleva Anna (45.9 t/ha; 1.61), Zekura (35.7/ha; 1.57) and Rozara (32.0 t/ha; 1.56). A group of varieties of a neutral type was identified, which weakly responds to changes in growing conditions: Kavaler (bi = 0.33), Kashtak (0.63), Amulet (0.65) and Kuzovok (0.77) of the Chelyabinsk selection and the variety Lad (0.73) and Yanka (0.73) of the Belarusian selection. The wide distribution of foreign varieties Koroleva Anna, Rozara and Zekura in agricultural enterprises of the Chelyabinsk region is explained by their high responsiveness to intensification of production, while the Gala variety combines ecological plasticity and stability. Scientific novelty. The assessment of the adaptive potential of potato varieties created in the Republic of Belarus made it possible to identify seven adaptive varieties suitable for cultivation in the South Urals. The Uladar variety belongs to the intensive type genotypes. Varieties Briz, Manifest, Pershatsvet and Palats combine high productivity, environmental plasticity and stability. Potato varieties Yanka and Lad react poorly to changing growing conditions.

scholarly journals Growth performance and nutritional quality of selected vegetables in response to organic and inorganic fertilizers under low and high irradiance

2021 ◽  
pp. 17-27
Author(s):  
L. T. Olaokiki ◽  
S. A. Adejumo
Keyword(s):  
Leaf Area ◽  
Open Field ◽  
Nutritional Quality ◽  
Growth Parameters ◽  
Soil Amendments ◽  
Number Of Leaves ◽  
Growing Conditions ◽  
Screen House ◽  
Better Than

Vegetables form major part of human dietary/nutritional needs. It provides the necessary vitamins and minerals as well as antioxidants to boost immunity. Different vegetables however have different benefits and require different growing conditions. This study investigated the effect of two growing conditions (Screen-house and open field) and soil amendments; Mexican sunflower compost (MSC; applied at 0, 5, 10 t/ha) and NPK 15:15:15 (applied at 0, 50 and 100 kg N/ha) on the growth performance, yield, and nutritional quality of five selected vegetables (Amaranthus cruentus, Celosia. argentea, Solanum macrocarpon, Solanum nigrum and Solanum incanum). Each treatment was replicated three times and experiment arranged in completely randomized design, Compost was applied a week before seed sowing vegetables grown in the screen-house generally performed better than the open field in terms of leaf area and chlorophyll content. The response however varied based on the vegetable and the soil amendments. Solanum species, performed better than Amaranthus under screen-house than open field. Chlorophyll in the leaf responded positively to NPK fertilizer under screen-house conditions while growth parameters such as plant height, stem girth, number of leaves under screen-house and field conditions varied depending on the vegetables. The number of leaves and leaf area increased with soil amendments. Moisture, crude protein and ash contents were reduced under open field compared to screen-house. The zinc and iron contents of the vegetable leaves showed that addition of compost was superior to NPK and screen-house better than open field. It can be concluded that vegetables grown in the screen-house performed better in their respective growth parameters than vegetables are grown under the open field.

scholarly journals Features of vitality structure of planting of Ginkgo biloba L. plants in the Ukrainian North-East

2019 ◽  
pp. 66-71
Author(s):  
I.M. Kovalenko ◽  
H.O. Klymenko ◽  
R.A. Yaroschuk ◽  
Yahui Su
Keyword(s):  
Ginkgo Biloba ◽  
Raw Materials ◽  
Folk Medicine ◽  
Leaf Size ◽  
Climatic Conditions ◽  
North East ◽  
High Viability ◽  
Plant Experiment ◽  
Number Of Leaves ◽  
Growing Conditions

Today, there are about 12,000 plants in the world that have healing properties and are used in both traditional and folk medicine. One of these plants is Ginkgo biloba L. In recent years, interest in its cultivation has increased in Ukraine, and improving the technology of growing this plant in the Ukrainian North-East is a relevant problem. Studies of G. biloba plants growing in the experimental area of Sumy NAU were conducted. On the basis of morphometric analysis, a number of morphoparameters were measured (plant height, annual growth of shoots, number of leaves, leaf size and leaf area, phytomass of the shoots, phytomass of leaves and phytomass of the stem, diameter of the shoots). The vital analysis, as well as the variance, correlation and regression analyses were carried out. G. biloba seedlings up to 3–4 years of life with different growing technology have a height of 25–30 cm and form 13–17 leaves per plant. The totality of morphometric characteristics in all variants of the G. biloba plant experiment corresponded to an equilibrium population of equilibrium type, in which in close proportions individuals of all three vitality types are present: a, b, and c. But at the same time a higher proportion (40 %) of individuals of class "a" was in the variant with the cultivation of G. biloba in greenhouse. The smallest part of individuals of high viability (only 20 %) was formed by cultivation of G. biloba in open soil without protection of the agro-grid. The ecological-coenotic stability of G. biloba has been noted many times, a certain limitation of G. biloba cultivation may be that this plant is light loving and thermophilic, but the climatic conditions of the Ukrainian North-East are favorable for it. Complex studies have shown the prospects and feasibility of growing G. biloba in the conditions of t the Ukrainian North-East as medicinal raw materials. Despite the stressful growing conditions for G. biloba, this species is characterized by high stability and adaptability, which is confirmed by our comparative morphometric and vital analysis of plants. Given that the age of the seedlings is negligible, further studies to determine the adaptability of G. biloba plants to growing conditions are not only desirable but also necessary.

ASSESSMENT OF A LARGE-FRUITED STRAWBERRY VARIETIES ECOLOGICAL PLASTICITY AND STABILITY IN TERMS OF PRODUCTIVITY AND FRUIT QUALITY

1970 ◽  
pp. 40-43
Author(s):  
T. G. Dakhno ◽  
O. А. Dakhno
Keyword(s):  
Vitamin C ◽  
Positive Response ◽  
Soluble Solids ◽  
Regression Analyses ◽  
Ecological Plasticity ◽  
High Vitamin ◽  
Significant Strength ◽  
Kamchatka Region ◽  
Fruit Productivity ◽  
Growing Conditions

The article presents a comparative analysis of the ecological plasticity and stability of large-fruited strawberry varieties in the conditions of the Kamchatka region. As a result of statistical and regression analyses, varieties with high ecological plasticity of productivity (bi  > 1) and a positive response to improved growing conditions were identified, classified as intensive type: Pervoclassniza, Atlas, Japonka, Grenada, Festivalnay romashka, Galina, Fructovay; with low plasticity (bi < 1)-extensive type: Solnechnay polaynka, Corrado, Wengerca. Of particular value are the most stable in terms of productivity varieties of intensive type Galina and Fruit. A positive correlation of significant strength between the productivity of strawberry varieties and the coefficients of stability (r = 0,7) and plasticity (r = 0,6) was established, which shows the effectiveness of their use in assessing the adaptability of varieties. High-vitamin varieties with an average berry weight of at least 7,0 g, the most environmentally plastic and stable in vitamin C content, were identified: Atlas, Firework, Pervoclassniza, Fructovay. A comprehensive assessment of the parameters of adaptability in terms of fruit productivity and quality (vitamin C content, soluble solids, sugar-acid coefficient)established that the highest ecological plasticity and stability are possessed by high-vitamin varieties of intensive type Pervoclassniza and Fructovay.

Comparative leaf blade anatomy and micromorphology in the systematics and phylogeny of Bambusoideae (Poaceae: Poales)

2019 ◽  
Author(s):  
Thales D Leandro ◽  
Vera L Scatena ◽  
Lynn G Clark
Keyword(s):  
Cross Section ◽  
Leaf Blade ◽  
Research Priorities ◽  
General Description ◽  
Mesophyll Cells ◽  
Surface View ◽  
Stomatal Apparatus ◽  
Phylogenetic Framework

Abstract Leaf blade anatomical and micromorphological data have increasingly proved to be useful in the systematics and phylogeny of Bambusoideae. The presence of well-developed, asymmetrically strongly infolded mesophyll cells (arm cells) as seen in cross-section is regarded a synapomorphy for bamboos, whereas many well-known, widely used features for diagnosing groups remain to be formally tested in a comprehensive phylogenetic framework. In this review, we investigate the use of anatomical and micromorphological features in defining and delimiting minor and major groups in Bambusoideae. A general description of the leaf blade as seen in cross-section and surface view is provided for the subfamily, as well as features commonly found in the three currently recognized tribes (Arundinarieae, Bambuseae and Olyreae) and their subtribes. Some features, including midrib vasculature, fusoid cells and stomatal apparatus, are discussed in the light of systematic and phylogenetic perspectives, along with a clarification of terminology. Illustrations of relevant features are also provided. This review allowed us to elucidate anatomical and micromorphological features useful in defining and delimiting lineages but also to highlight some research priorities in Bambusoideae.

Effect of plastic mulch and row covers on photosynthesis and yield of watermelon

2005 ◽  
Vol 45 (12) ◽  
pp. 1653 ◽  
Author(s):  
L. Ibarra-Jiménez ◽  
J. Munguía-López ◽  
A. J. Lozano-del Río ◽  
A. Zermeño-González
Keyword(s):  
Total Yield ◽  
Net Photosynthesis ◽  
Dry Weight ◽  
Bare Soil ◽  
Plastic Mulch ◽  
Row Covers ◽  
Number Of Leaves ◽  
Clear Plastic ◽  
Black Plastic ◽  
Growing Conditions

The effect of row covers on watermelon (Citrullus vulgaris) grown on plastic mulch is well documented. However, row covers have not been adequately evaluated under Mexican growing conditions. Watermelon plants were grown on plastic mulch alone or with row covers to study their effect on photosynthesis, and early and total yields. Treatments were clear plastic mulch (C); black plastic mulch (B); B plus a Vispore cover of polypropylene (BV); B plus a white cover of perforated polyethylene (BW); B plus a clear cover of perforated polyethylene (BC); B plus an Agribon cover of polypropylene (BA); and bare soil as the control. For plants grown in treatment C, B or B combined with row covers, plant dry weight and number of leaves 40 days after seeding (DAS) were higher than the control (P<0.05), except BC which was comparable to the control. Total yields of treatments C, B, BV, BW and BA differed (P<0.05) from BC and the control. Total yields increased by 46.1, 43.2, 35.7, 41.6, 13.3, 15.4 and 35.8 t/ha for the C, B, BV, BW, BC and BA treatments, respectively, over the control, which yielded 27.1 t/ha. Total yield was highest for the C and the B treatment suggesting that there was no need for additional covers. The number of leaves per plant or dry weight per plant better explains the changes in yield than net photosynthesis rate. Stomatal conductance was explained in part by changes in photosynthesis.

scholarly journals MORPHOLOGICAL AND PHYSIOLOGICAL PLASTICITY OF SAPLINGS OF Cabralea canjerana (Vell.) MART. IN DIFFERENT LIGHT CONDITIONS

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Anna Paula Lora Zimmermann ◽  
Frederico Dimas Fleig ◽  
Luciane Almeri Tabaldi ◽  
Suelen Carpenedo Aimi
Keyword(s):  
Leaf Area ◽  
Photosynthetic Activity ◽  
Dry Mass ◽  
Chlorophyll B ◽  
Light Conditions ◽  
Forest Fragment ◽  
Lower Content ◽  
Physiological Plasticity ◽  
Chlorophyll A And B ◽  
Number Of Leaves

ABSTRACT This work was carried out to verify the plasticity of saplings of Cabralea canjerana plants and their capacity to adapt to different light environments by means of morphological and physiological characteristics. For this, 12 plants of a secondary Deciduous Seasonal Forest fragment were selected, six growing under canopy and six in full sun. Trees were classified according to their sociological position as emergent and dominated. The leaves were classified as apical, intermediate and basal according to their position in the canopy. The variables measured were: total number of leaves, width, length, thickness, leaf area and dry mass of leaflets; content of chlorophyll a and b and carotenoids. Emergent leaflets of the upper position of the canopy in full sun, which are considered the most exposed to luminosity, presented xeromorphic characteristics such as leaflet size reduction, greater limbus thickness, smaller leaf area and lower content of chlorophyll b. The similarity in the dry mass and pigment content demonstrates that the photosynthetic activity of the C. canjerana plants analyzed is not being affected by the different conditions of the environment, which demonstrates the plasticity of the species and its capacity of development in several light conditions.

scholarly journals Kajian Penggunaan Biourine Sapi dan Ekstrak Bawang Merah Terhadap Sifat Agronomi Tanaman Kubis (Brasicca oleracea L.) Dataran Rendah

2019 ◽  
Vol 7 (2) ◽  
pp. 63
Author(s):  
Tutik Nugrahini ◽  
Asiah Wati ◽  
Dwi Indriani
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Economic Value ◽  
Brown Sugar ◽  
Onion Extract ◽  
East Kalimantan ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Growing Conditions ◽  
Control Water

Cabbage (Brasicca oleracea L.) is one type of vegetable plant from the Brassicaceae family. This plant is a source of nutrients that contain nutrients, vitamins, minerals and fiber for the human body. And has economic value. Cabbage cultivation is influenced by the types of cultivated varieties that are in accordance with growing conditions. In general, cabbage plants grow on highlands. Along with advances in plant breeding technology, cabbage plants are available that can adapt to the lowlands and technically attempt to increase production by fertilizing. The study aimed to determine the effect of beef biourine, red onion extract and beef biourine and red onion extract on the agronomic properties of cabbage plants. The study was conducted for 4 months, from February to June 2018. The location of the study was carried out in the Sempaja Timur Village, Samarinda City, East Kalimantan Province. cabbage seeds, top soil, manure, husks, NPK fertilizer, cow urine, empon-empon, soybeans, brown sugar, shallots. The design used in this study is Factorial Randomized Block Design (RBD) with 2 treatments. The first treatment was beef biourine (S) with 4 levels, namely with 3 replications: s0: control (water), s1: 25% concentration of cow biourine, s2: 75% concentration of bovine biourine, s3: 100% concentration of bovine biourine and second treatment red onion extract (B) with 4 levels, namely: b0: control (water), b1: 25% concentration of red onion extract, b2: 75% concentration of red onion extract, b3: 100% concentration of shallot extract. The results of research on bovine biourine influenced plant height, number of leaves at ages 7, 14, 21, 28.35 and 42 days after planting. The weight of the crop with the best results at the level of b2 (75% biourine cow) weighing 596.58 grams, onion extract affects plant height, number of leaves at 7, 14, 21, 28.35 and 42 hst, crop weight with the best results at the m2 level (75% red onion extract) with a weight of 567.14 grams and the interaction of the treatment of beef biourine and shallots affects plant height, number of leaves at the ages of 7, 14, 21, 28.35 and 42 days and days formed at the level b2m2 (75% beef biourine and 75 red onion extracts).

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