scholarly journals Assessmentof seed productivity of complex hybrid populations of red clover

2021 ◽  
Vol 22 (1) ◽  
pp. 47-46
Author(s):  
I. V. Shikhova ◽  
E. V. Popova ◽  
E. G. Arzamasova
Keyword(s):  
Seed Yield ◽  
Red Clover ◽  
Seed Productivity ◽  
Seed Material ◽  
Yield And Quality ◽  
Sum Of Effective Temperatures ◽  
Phases Of Development ◽  
Beginning Of Flowering ◽  
Complex Hybrid ◽  
Number Of Seeds

In the conditions of the Kirov region, the productivity of seeds of four complex hybrid populations (SGP) of red clover was studied, including those formed against an infectious fusarium background (SGPF). The research was carried out in the nursery for evaluating the seed productivity of 2017 sowing in comparison with the standard (st.) Dymkovsky for 2 years of use (y.u.). The characteristics of the SGP and SGPF according to winter hardiness, the start of vegetation phases of development, plant height, structure of seedgrass stand, yield and quality of seed material are given. All studied varieties were more productive than the standard (1.97 c/ha). Reliably high seed yield on average for 2 years was shown by SGPF-158-3 – 2.48 c/ha, SGP-188 – 2.32 c/ha, SGPF-157-3 – 2.16 c/ha. According to fruiting indicators, in 2019SGPF-158-3 with small heads, but with the largest number of flowers and seeds (132.2 and 77.4 pcs., respectively), good seediness (58.8 %) and high seed weight per head (0.153 g) was selected. Also, high rates were noted in the populations of SGPF-157-3 and SGPF-160-3. A strong correlation between seed yield and fruiting rates was revealed: the number of flowers in the head (r = 0.92), the total number of seeds in the head (r = 0.92), the number of filled seeds in the head (r = 0.94), the seediness of the head (r = 0.90), the total weight of seeds in the head (r = 0.85), the mass of filledseeds in the head (r = 0.87). A close positive correlation was noted between the hydrothermal coefficient (HTC) value and length (r = 0.86), width (r = 0.86) of the red clover head during the intergrowth period “regrowth - the beginning of flowering”. It has been established that the average daily air temperature and the sum of effective temperatures during the “beginning of flowering - ripening” period have a positive effect on the fruiting performance: “seediness of the heads” (r = 0.97 and r = 0.87) and “the number of seeds in the head” (r = 0.95 and r = 0.89, respectively). In the same interphase period, a close negative dependence of the indicated fruiting indices on the HTC values was revealed (r = -0.95 and r = -0.94). The sowing qualities of the seeds of the 2019 harvest were determined; it was found that all seed material corresponds to the category of “original and elite seeds”. As the result of the research, the populations of red clover SGPF-158-3, SGP-188 and SGPF-157-3, superior to st. Dymkovsky on seed productivity (by 0.51; 0.35 and 0.9 c/ha, respectively, LSD05 = 0.12 c/ha) and fruiting indicators, were selected.

scholarly journals THE INFLUENCE OF COMPLEX FERTILIZERS AND GROWTH REGULATOR ON SEED PRODUCTIVITY OF AWNLESS BROME

2021 ◽  
Vol 212 ◽  
pp. 33-39
Author(s):  
A. P. Eryashev ◽  
◽  
A. A. Kozlova ◽  
P. A. Eryashev ◽  
◽  
...  
Keyword(s):  
Seed Yield ◽  
Maximum Mass ◽  
Seed Number ◽  
Seed Productivity ◽  
Urban District ◽  
Factor B ◽  
Time Of Application ◽  
The Republic ◽  
Spraying Plants ◽  
Number Of Seeds

The article presents results of the experiments carried out on leached black soils of the Republic of Mordovia to identify the effect of liquid complex fertilizers and Albit on awnless brome seed productivity. For this purpose, a two-factor field experiment was laid on crops of awnless brome on the experimental field No. 1 of OAO “Mordoviyagosplem” in Ozerny village of urban district of Saransk city in 2018 - 2020 according to the following scheme: Factor A – Time of application of liquid complex fertilizers and Albit. 1 - At the beginning of spring growth, 2 - In the phase of stalk-shooting, 3 - In the phase of spring growth + in the phase of stalk-shooting. Factor B - Liquid complex fertilizers and Albit. 1. - Without usage of liquid complex fertilizers and Albit (control). 2. - Megamix-profi. 3. - Megamix nitrogen. 4 - Albit. The results of the research revealed that the height of generative shoots (99 - 105 cm) and the length of panicles (14.6 - 16.9 cm) did not change significantly in case of application of fertilizers and Albit; the maximum number of inflorescences was, in comparison with the control, in case of application of Megamix-profi (28.4 %), Megamix-nitrogen (28.9 %), Albit (27.8 %) at the time of spring growth and at the beginning of stalk-shooting with Albit application ( 30.6 %); the usage of Megamix - profi in the phase of stalk-shooting and growth + stalk-shooting led to a greater seed number in inflorescences (68.2 and 68.6 %). Albit contributed to an increase of the number of generative shoots at all periods of application (141, 137, 144 pieces / m2); the largest number of seeds in an inflorescence was noted when spraying plants with Megamix-profi and Albit at the time of spring growth (101.3 and 100.4 pcs.), Megamix - nitrogen – in the phase of stalk-shooting (101.6 pcs.); the application of Megamix-nitrogen at the time of spring growth promoted the maximum mass of 1,000 seeds (4.17 g); spraying with Megamix-nitrogen (531 - 466 kg / ha) and Albit (507 - 466 kg / ha)at the beginning of spring growth and shooting, as well as with Megamix-profi (508 kg / ha) in the phase of stalk-shooting led to the maximum seed yield , with an advantage over the control by 35.1 - 29.0 %; 18.6 - 17.8 % and 29.2 %

DURATION OF SEED GRASS-STAND USE OF PERENNIAL LEGUMINOUS GRASSES

2021 ◽  
pp. 51-62
Author(s):  
N.I. KASATKINA ◽  
◽  
ZH.S. NELYUBINA ◽  
I.SH. FATYKHOV
Keyword(s):  
Seed Yield ◽  
Red Clover ◽  
First Year ◽  
Seeding Rate ◽  
Seed Productivity ◽  
Grass Stand ◽  
Perennial Legume ◽  
Alfalfa Varieties ◽  
Growing Conditions ◽  
One Year

Seed productivity of perennial leguminous grasses is subject to sharp fluctuations due to their biological characteristics, different reactions to changes in growing conditions, and meteorological factors over the growing season. In this case, the productive longevity of herbs is of great importance. The research aims to analyze the seed productivity and the duration of using the grassstand of perennial legume grasses in the meteorological conditions of the Middle Pre-Urals. The analysis of seed yield, energy, and economic efficiency of long-term use of perennial leguminous grasses was carried out based on a result of studies laid down in the Udmurt Research Institute of Agriculture of the UdmFRC of the UB RAS in 1996–2005 with the eastern Galega variety Gale, in 2011–2015 – with varieties of red clover and variegated alfalfa, in 2011–2016 – with birds-foot trefoil variety Solnyshko. The research found that red clover sowing is best used for seeds for one year. In the first year of use, the yield of double-cut clover varieties was 146 kg/ha, of single-cut varieties – 138 kg/ha. In the second year of using the grass stand, the yield significantly decreased to 37 and 39 kg/ha. The yield of 162 kg/ha at the standard level was formed by the twocut clover variety Dymkovsky. Crops of variegated alfalfa can be used for seeds for two years. Seed productivity of variegated alfalfa varieties in the 1st year of use was 204 kg/ha, in the 2nd year of use – 260 kg/ha. Alfalfa of the Guzel variety formed a significantly high seed yield of 251 kg/ha. The recommended duration of the use of the birds-foot trefoil grass-stand is two to three years. In the 1st and 2nd years of use of the grass stand, the yield of the seeds was relatively high, 215–378 and 213–349 kg/ha, respectively. By the 3rd year of use, it decreased to 89–161 kg/ha. The old-age grass stand of the 4th year of use did not form seeds. Sowing the birds-foot trefoil without a cover or under cover of spring wheat by the usual row method with a seeding rate of 8–9 million units/ha showed the highest seed yield of 255–270 kg/ha. The duration of the use of the eastern Galega grass-stand is up to 10 years or more. The highest yield of Galega seeds of 510 kg/ha was obtained during the harvesting of grass in the first year of use for feed, in the second – fifth year of use – for seeds, from the 6th year of use – for feed.

scholarly journals Урожайні властивості та посівні якості насіння проса прутоподібного залежно від умов вирощування

2018 ◽  
pp. 78-84
Author(s):  
М. І. Кулик ◽  
І. І. Рожко
Keyword(s):  
Soil Fertility ◽  
Seed Yield ◽  
Humus Content ◽  
Plant Part ◽  
Limiting Factors ◽  
Forest Steppe ◽  
Seed Productivity ◽  
High Quality ◽  
Seed Material ◽  
Quantitative Characteristics

У статті обґрунтовано необхідність вивчення проса прутоподібного (світчграсу) як енергетичної культури, сировину якої доцільно використовувати для виробництва різних біопалив: рідких, твердих та газоподібних. Матеріалом для дослідження були рослини та насіннєвий матеріал сорту проса прутоподібного іноземної селекції Кейв-ін-рок. Здійснено спробу визначити оптимальні умови (за гідротермічним коефіцієнтом і з урахуванням родючості ґрунтів) для отримання високого врожаю насіння в умовах України та шляхи підвищення його посівних кондицій. За результатами трьохрічних досліджень встановлено вплив погодних умов веґетаційного періоду на продуктивність насіння проса прутоподібного. Експериментальним шляхом визначено лімітуючі фактори та шляхи їх нівелювання для забезпечення гарантованого отримання якісного насіннєвого матеріалу в умовах Лісостепу. Аналіз результатів досліджень дав змогу встановити вплив біометричних (кількісних) показників генеративної частини рослин (довжини та кількості волотей на рослинах, маси 1000 насінин) на насіннєву продуктивність, що обумовлюють і загальний урожай насіння. Визначено вплив крупності насіннєвого матеріалу та терміну зберігання його на лабораторну схожість насіння у взаємозв’язку з особливостями його формування на материнських рослинах за різних умов вирощування. Necessity of studying switchgrass as an energy crop, raw material of which may be used for producing different types of biofuel such as liquid one, solid and gaseous ones has been substantiated in the article. The foreign experience of obtaining switchgrass seed of high quality has been investigated on the basis of scientific publications. We have established the limiting factors affecting seed yield, sowing characteristics, germination conditions, growth and development of plants in the early periods of vegetation. The attempt of determining optimal conditions (by hydrothermal coefficient and soil fertility) for providing high seed yield in Ukraine as well as ways of increasing seed characteristics has been made. Many years’ experiments were conducted in the central part of Forest-Steppe of Ukraine on two types of soils: high-productive soil with humus content of more than 4 % and nutrient lean soil with humus content of less than 2 %. Research material was plants and seed of Cave-in-Rock switchgrass variety of foreign selection. The methods of testing, field and laboratory experiments, scientific recommendations were applied in the experiment. The experimental results were processed by the dispersion analysis and correlative-regression analysis with application of the computer program Statistics. After three years of investigation, influence of the vegetation period weather conditions on switchgrass seed productivity has been established. The limiting factors and the ways of decreasing their effect in order to provide guaranteed getting of high quality seed material in the conditions of Forest-Steppe of Ukraine have been defined by the experiments. At the same time the effect of soil conditions on the crop seed productivity has been proved. The analysis of the research findings enabled to show influence of biometric (quantitative) characteristics of the generative plant part (length and number of panicles per the plant, mass of 1000 seeds) on seed productivity that affect total seed yield. Besides, influence of seed material size and storage period on laboratory seed germination in the interconnection with seed formation peculiarities on maternal plants in different cultivation conditions has been determined. The yield of switchgrass seeds depends on weather factors and soil fertility. Also we defined influence of quantitative characteristics in the generative plant part – length and number of panicles per the plant, mass of 1000 seeds on seed yield. Laboratory germination of seeds depends on the storage size and the mass of 1000 seeds.

scholarly journals Seed productivity of alfalfa varieties and its components

2020 ◽  
pp. 37-39
Author(s):  
Tatyana Nikolaevna Popova
Keyword(s):  
Correlation Analysis ◽  
Seed Yield ◽  
High Potential ◽  
Herbaceous Plant ◽  
Seed Productivity ◽  
Seed Harvest ◽  
New Varieties ◽  
Alfalfa Varieties ◽  
Number Of Seeds

Alfalfa blue is a perennial, multi-cut herbaceous plant. The expansion of the lucerne sowing areas does not occur due to the lack of sufficient sowing material, which in turn is due to low seed productivity. The solution to this problem is possible only when moving to new varieties with high potential for seed yield and introducing improved technologies. Our article shows the characteristic of new varieties of  alfalfa of the Ershovsky selection. New varieties Serena and Natalie had the highest seed harvest rates in 9 years. Natalie variety on average for 9 years (2009-2017) by the number of brushes on one stem, the number of seeds in the bean and the number of beans in the brush was higher than the Uzen variety-standard by 5.0 respectively; 11.0 and 6.0%. According to the correlation analysis of the indicators, the crop of seeds and seeds in the bean is significant positive.

scholarly journals Evaluation of Integrated Seed Treatment on Seed Yield and Quality in Blackgram (Vigna mungo L.)

2021 ◽  
Author(s):  
K. Malarkodi ◽  
G. Gomathi ◽  
M. Ananthi
Keyword(s):  
Moisture Content ◽  
Seed Yield ◽  
Untreated Control ◽  
Seed Treatment ◽  
Field Experiments ◽  
Untreated Seed ◽  
Pod Yield ◽  
Yield And Quality ◽  
Pulse Production ◽  
Number Of Seeds

Background: In India pulses production and productivity is low and inadequate to meet the demand of nation. The alternate option to increase the pulse production is through seed amelioration by combining the seed hardening, coating and pelleting techniques. The current study was aimed to evaluate integrated seed treatment on seed yield and quality in blackgram. Methods: The seeds were first preconditioned by keeping them in between two layers of moist gunny bag for one hour. Then, the preconditioned seeds were soaked for three hours in 100 ppm ZnSO4 solution at 1/3 volume of seeds and shade dried to their original moisture content (hardened seed). Then the hardened seeds were supplemented with Polymer 3ml/kg + Carbendazim 2g/kg + Imidacloprid 1ml/kg for integrated seed treatment and field experiments were carried out along with untreated seed. Result: Among the seed treatments, integrated seed treatment recorded higher pod set per cent (84.00), number of pods / plant (52.00 pod yield / plant (27.60 g), pod yield / ha (752 kg), number of seeds / pod (6.00), seed yield / plant (17.6 g) and seed yield /ha (590 kg) which were respectively 3.70, 8.33, 4.15, 3.01, 20.00, 4.14 and 1.89 per cent higher than mere hardened and untreated control seeds thus suggesting that integrated seed treatment can be recommended for improving the productivity of blackgram.

scholarly journals Effect of bulb size on selected morphological characteristics of seed stalks, seed yield and quality of onion (Allium cepa L.) seeds

2009 ◽  
Vol 21 (1) ◽  
pp. 27-38 ◽  
Author(s):  
Maria Morozowska ◽  
Roman Hołubowicz
Keyword(s):  
Allium Cepa ◽  
Seed Yield ◽  
Morphological Characteristics ◽  
Germination Energy ◽  
Yield And Quality ◽  
Allium Cepa L ◽  
Entire Plant ◽  
One Year ◽  
Number Of Seeds

Abstract In the years 2002 − 2004 research was carried out on the effect of onion (Allium cepa L.) ‘Wolska’ bulb size on selected morphological characteristics of seed stalks, seed yield and quality. Commercial bulbs (vernalised, one-year-old mother bulbs) were divided into three groups: small, medium and large, with diameters of 4.2-5.3 cm, 5.4-6.3 cm and 6.4-8.5 cm, respectively. Then, the bulbs of each group were planted in the field and grown routinely with the purpose of producing seeds. The following characters were measured on the seed stalks: number and height of seed stalks grown out from one bulb, the seed stalks’ diameter at the height of 10 cm above the ground, the diameter of the inflorescence, seed yield from a single stalk and from the entire plant, the weight of 1000 seeds, number of seeds in 1 g, length and width of the seeds, length and width of the embryos, and germination energy and capacity. Our experiments showed a significant influence of bulb size on the number of seed stalks and the inflorescence diameter. It was discovered that the big bulbs gave larger numbers of seed stalks than the seed stalks grown from the medium and small ones. Small bulbs gave seed stalks with smaller inflorescences than the medium and large ones. The bulb size had no effect on the seed stalk height or their diameter when measured at the level of 10 cm above the ground. The bulb size also did not affect seed yield per one seed stalk, but it did affect the seed yield obtained from the entire plant, which was bigger for plants grown from large bulbs in comparison with the small ones. The size of the bulbs had no effect on either the weight of 1000 seeds or the number of seeds in 1 g. It did not affect either the seed and embryo length and width or the seed germination energy and capacity.

scholarly journals Plant Density Affects Yield and Quality of Confectionery Pumpkin Seeds

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 802C-802
Author(s):  
Sung Eun Lee* ◽  
Sang Gyu Lee ◽  
Chiwon W. Lee
Keyword(s):  
Seed Yield ◽  
Seed Quality ◽  
Plant Density ◽  
Dry Weight ◽  
Plant Spacing ◽  
Yield And Quality ◽  
Pumpkin Seeds ◽  
Total Seed ◽  
Number Of Seeds

The influence of plant density on yield of three confectionery seed pumpkin accessions was investigated under non-irrigated field conditions. Seeds of Golden Delicious (GD), open-pollinated Chinese snow-white seed (CS), and a selection from Austrian hull-less (HL) pumpkin were planted 30, 60, and 90 cm apart in rows that were 127 cm apart with seedlings thinned to one plant per hill. Plants were grown from 23 May to 18 Sept. One fruit per plant was harvested from five plants for each of the three replications. The number of seeds (and dry weight of seed) per fruit were 242 (59 g), 304 (87 g), and 334 (106 g), respectively, at 30, 60, and 90 cm spacing for GD. The number of seeds (and dry weight of seed) per fruit were 219 (108 g), 266 (108 g), and 258 (106 g), respectively, at 30, 60, and 90 cm spacing for CS. The number of seeds (and dry weight of seed) per fruit were 376 (76 g), 404 (94 g), and 304 (82 g), respectively, at 30, 60, and 90 cm spacing for HL. Highest seed yield was at 60 cm plant spacing for CS and HL, whereas GD produced highest seed yield at 90 cm plant spacing. The differences in total seed yield, seed size, and confectionery seed quality, as influenced by plant density and seed source, were also characterized.

scholarly journals Effect of Foliar Application of Plant Growth Hormones on Yield and Quality Parameters in Ajowan (Trachyspermum ammi L. Sprague)

2021 ◽  
pp. 116-123
Author(s):  
Y. Rajasekhara Reddy ◽  
G. Ramanandam ◽  
P. Subbaramamma ◽  
A. V. D. Dorajeerao
Keyword(s):  
Plant Growth ◽  
Seed Yield ◽  
Foliar Application ◽  
Quality Parameters ◽  
Growth Hormones ◽  
Plant Growth Hormones ◽  
Yield And Quality ◽  
Trachyspermum Ammi ◽  
And Control ◽  
Number Of Seeds

Foliar application of plant growth regulators viz.,  GA3 -50& 100 ppm,  NAA- 50 ppm &100 ppm, Thiourea- 250 & 500 ppm, 28-Homobrassinolide- 0.1& 0.2ppm, Triacontanol - 2.5& 5 ppm and Control. All the treatments were applied as foliar sprays at 30 and 45 DAT. Days to 50% flowering (46 d) and days to harvest (100.20 d) were found earlier in ajowan with the foliar applications of triacontanol by 5 ppm (T10).The same treatment had recorded the maximum number of umbellate umbel-1(14.20). Foliar applications of thiourea by 250 ppm (T5) had record the highest values  with respect to yield, yield attributing characters viz number of umbels plant-1(228.70), number of seeds umbel-1(183.60), number of seeds umbellate-1(13.50), test weight (1.56 g), seed yield plant-1 (28.50 g), seed yield plot-1 (1425 g), seed yield hectare-1(1583.33 kg), harvest index (69.71%) and quality parameters viz essential oil (3.64%) and protein contents (19.26 mg 100 g-1).

scholarly journals STUDYING PARAMETERS OF SEED GRASS STAND OF PANNONIAN CLOVER (Trifolium pannonicum Jacq.) VARIETY 'SNEZHOK' AT LONG-TERM USE OF SOWING IN THE CONDITIONS OF THE KIROV REGION

2019 ◽  
Vol 2019 (4) ◽  
pp. 15-26
Author(s):  
Evgenia Valerievna Popova ◽  
Maria Gripas ◽  
Ekaterina Arzamasova
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Weather Conditions ◽  
Climatic Conditions ◽  
Seed Productivity ◽  
Scientific Center ◽  
North East ◽  
Grass Stand ◽  
Beginning Of Flowering

The article presents results of study of biological features of pannonian clover 'Snezhok' (created in the Federal Agricultural Scientific Center of North-East) at long-term use of a reproduction nursery (2011 sowing) for seeds. The soil-climatic conditions of research, the used material and assessment methods are described. The duration of periods of above-ground mass formation, height of plants, structure of stand and seed yield are determined. An elongation of the period from regrowth to the beginning of flowering with increasing of the stand's age was noted. The height of plants, yield of green mass and dry matter in the phase of head and seed ripening increased with the age of the grass stand. An increase in the number of generative stems, heads and mass of seeds per head was also observed. The level of seed productivity of pannonian clover depended more on the age of the grass stand than on the weather conditions of the growing season. We found that the potential seed productivity in favorable years can reach 8.48 kg/ha, while the actual seed yield on average over the years of research was 1.29 kg/ha, with fluctuations from 0.71 (2017) up to 4.63 kg/ha (2015).

scholarly journals Influence of abiotic factors on seed productivity of red clover (Trifolium pratense L.) in subarctic conditions of the Russian Federation

2019 ◽  
Vol 2019 (2) ◽  
pp. 40-45
Author(s):  
Валентина Корелина ◽  
Valentina Korelina
Keyword(s):  
Russian Federation ◽  
Field Experiments ◽  
Trifolium Pratense ◽  
Abiotic Factors ◽  
Negative Relationship ◽  
Red Clover ◽  
Northern Region ◽  
Seed Productivity ◽  
Sum Of Effective Temperatures ◽  
The Russian Federation

Field experiments on sod-podzolic medium-loamy soil typical for the Northern region of the Russian Federation were carried out to identify the dependence of seed productivity of red clover varieties on abiotic conditions. Meteorological conditions during the years of research (2012–2018) were different and had a significant effect on seed productivity of clover. It is established that the seed productivity of red clover has a positive correlation with the temperature regime and a negative relationship with rainfall, which indicates the possibility of seed growing of this culture in the study zone. However, seed yield varied considerably from year to year and ranged from 96 to 403 kg/ha. The reasons for the reduction of seed production in some years were varied and complex. As a result of researches it is revealed that for formation of productivity of seeds of a clover more than 150 kg/ha conditions are necessary: sum of effective temperatures above 1400 °С, the hydrothermal coefficient less than 1.6. From 7 years of research conditions close to those in the Northern zone of clover sowing were 57%. The most plastic samples by seed productivity were selected: Taezhnik, K-44933, K-48009, K-1809, K-1040.

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