The effect of plant population and CCC on Spring wheat varieties with and without a dwarfing gene

1971 ◽  
Vol 77 (3) ◽  
pp. 499-510 ◽  
Author(s):  
J. V. Lovett ◽  
E. J. M. Kirby
Keyword(s):  
Spring Wheat ◽  
Yield Components ◽  
Growth And Development ◽  
Growth Analysis ◽  
Genotypic Variation ◽  
Agronomic Performance ◽  
Spray Application ◽  
Wheat Varieties ◽  
Dwarfing Gene ◽  
Final Harvest

SUMMARYThe growth and development of the spring wheat varieties Kolibri, Sirius and TB 435 ranging in height from relatively tall to semi-dwarf were compared when sown at 50, 200 and 800 plants m−2, with and without a spray application of CCC at the six-leaf stage. Growth analysis measurements were made throughout the season. Yield and yield components were determined at final harvest.A number of varieties x density and variety x CCC interactions were found which support the hypothesis that genotypic variation and environmentally induced differences in GA metabolism affect the agronomic performance of the crop.

scholarly journals SPEEDS OF SPRING WHEAT GROWTH AND DEVELOPMENT DEPENDING ON HYDROTHERMAL CONDITIONS

2020 ◽  
pp. 43-47
Author(s):  
Marina Poskrebysheva ◽  
Rafael' Ismagilov
Keyword(s):  
Air Temperature ◽  
Spring Wheat ◽  
Coefficient Of Variation ◽  
Growth And Development ◽  
Quantitative Description ◽  
Published Data ◽  
Hydrothermal Conditions ◽  
Wheat Varieties ◽  
The Republic ◽  
Phenological Phases

Studies were conducted to study the effect of air temperature and the amount of precipitation on the growth and development of spring wheat plants. Analysis and quantitative description of the dependence of the duration of interphase periods was carried out by methods of correlation and regression analysis, changes in the duration of periods by calculating the coefficient of variation. For analysis, we used the results of long-term field observations (2014–2019) over the time of the onset of phenological phases in spring wheat varieties of the mid-ripe group in the Ural steppe, as well as published data of Davlekanovskiy GSU of the Republic of Bashkortostan for 1993–2016. An increase in temperature during all periods of vegetation accelerates the growth and development of plants, an increase in rainfall, on the contrary, slows down these processes. The change in hydrothermal conditions most strongly affects the duration of tillering – heading and heading – waxy ripeness periods. The coefficient of variation of their duration is 26.9 and 28.7, respectively. With an increase in air temperature by 1°C in the range of 11.3 ... 20.50С, the tillering-heading interfacial period decreases by 0.408 days, and the ripening of spring wheat grain (at a temperature of 10.7 ... 24.2°C) is accelerated by 0.424 of the day. An increase in precipitation by 10 mm in the range of 1.0 ... 126.2 mm slows the onset of heading by 0.39 days, waxy ripeness of grain (with a total of 0 ... 131.1 mm) - by 0.40 days. Statistical models of the dependence of the duration of interphase periods of growth and development of spring wheat plants on the amount of precipitation and average daily temperature can be used to predict the calendar dates of the onset of phenological phases and the operational adjustment of technological operations to care for sowing

scholarly journals SPEEDS OF SPRING WHEAT GROWTH AND DEVELOPMENT DEPENDING ON HYDROTHERMAL CONDITIONS

2020 ◽  
Vol 15 (1) ◽  
pp. 38-42
Author(s):  
Marina Poskrebysheva ◽  
Rafael' Ismagilov
Keyword(s):  
Air Temperature ◽  
Spring Wheat ◽  
Coefficient Of Variation ◽  
Growth And Development ◽  
Quantitative Description ◽  
Published Data ◽  
Hydrothermal Conditions ◽  
Wheat Varieties ◽  
The Republic ◽  
Phenological Phases

Studies were conducted to study the effect of air temperature and the amount of precipitation on the growth and development of spring wheat plants. Analysis and quantitative description of the dependence of the duration of interphase periods was carried out by methods of correlation and regression analysis, changes in the duration of periods by calculating the coefficient of variation. For analysis, we used the results of long-term field observations (2014–2019) over the time of the onset of phenological phases in spring wheat varieties of the mid-ripe group in the Ural steppe, as well as published data of Davlekanovskiy GSU of the Republic of Bashkortostan for 1993–2016. An increase in temperature during all periods of vegetation accelerates the growth and development of plants, an increase in rainfall, on the contrary, slows down these processes. The change in hydrothermal conditions most strongly affects the duration of tillering – heading and heading – waxy ripeness periods. The coefficient of variation of their duration is 26.9 and 28.7, respectively. With an increase in air temperature by 1°C in the range of 11.3 ... 20.50С, the tillering-heading interfacial period decreases by 0.408 days, and the ripening of spring wheat grain (at a temperature of 10.7 ... 24.2°C) is accelerated by 0.424 of the day. An increase in precipitation by 10 mm in the range of 1.0 ... 126.2 mm slows the onset of heading by 0.39 days, waxy ripeness of grain (with a total of 0 ... 131.1 mm) - by 0.40 days. Statistical models of the dependence of the duration of interphase periods of growth and development of spring wheat plants on the amount of precipitation and average daily temperature can be used to predict the calendar dates of the onset of phenological phases and the operational adjustment of technological operations to care for sowing

scholarly journals COMPARISON OF ADAPTATION ASSESSMENT OF FOUR LOCAL SPRING WHEAT VARIETIES IN KABUL CLIMATIC CONDITIONS

2020 ◽  
pp. 20-23
Author(s):  
Mohammad Hakim Osmani ◽  
Tamim Fazily ◽  
Beheshtah Kohshani ◽  
Mujtaba Mirzaee
Keyword(s):  
Spring Wheat ◽  
Yield Components ◽  
Climatic Condition ◽  
Block Design ◽  
Growth Yield ◽  
Climatic Conditions ◽  
Wheat Varieties ◽  
Local Varieties ◽  
Climate Conditions ◽  
Randomized Complete Block Design

A field experiment was conducted for two consecutive spring seasons of 2017 and 2018 at experimental farm of the Kabul University, to study effects of varieties on growth, yield components and yield of wheat under Agro-climate conditions of Kabul. The experimental was laid out in randomized complete block design with four treatment and three replications. Four local spring varieties i.e., V1-Zardana Baghlan,V2- Sorkha-Andarab, V3-Safida-Kunduz and V4- Safida-Andarab. Among the varieties Safida-Andarab (V4), produced shorter plant height but significantly higher number of tillers (416.67 and 425.33 m2), spikes (397.33 and 419.6), number of grains per spike (50.67 and 53.33), grains per spike length (3.00 and 3.00), test weight (40.33 and 41.33 g) and grain yield of (4.17 and 4.43 t/ha) of wheat, being at par with variety of Safida-Kunduz during both the consecutive years, respectively. KEY WORDS: local varieties, adaptation, climatic condition, yield, wheat

scholarly journals Effect of pre-sowing treatment of spring wheat seeds with silicon-containing chelate microfertilizer on the growth and development of seedlings

2020 ◽  
Author(s):  
L.M. Anikina ◽  
◽  
O.R. Udalova ◽  
G.G. Panova ◽  
◽  
...  
Keyword(s):  
Seed Germination ◽  
Spring Wheat ◽  
Growth And Development ◽  
Seed Treatment ◽  
Wheat Varieties ◽  
Varietal Differences ◽  
Germination Energy ◽  
Sowing Seed ◽  
Wheat Seeds

The influence of pre-sowing seed treatment of spring wheat varieties ‘Ester’ and ‘Leningradskaya 6’ with silicon-containing chelate microfertilizer (SCM) on the seedlings’ growth and development was studied. Varietal differences of spring wheat in response to pre-sowing seed treatment with SCM were revealed. For both wheat varieties, this fertilizer stimulates the germination energy and germination itself. Thus, after SCM treatment at a concentration of 5 mg/l, there was a significant increase in ‘Ester’ seed germination energy (by 19 %) compared to control, as well as by 20–27 % in ‘Leningradskaya 6’ variety. More pronounced stimulating effect of SCM was observed for ‘Ester’ at a concentration of 1.0 mg/l; the same for ‘Leningradskaya 6’ – at a concentration of 3.0 and 5.0 mg/l.

scholarly journals INFLUENCE OF SPRING WHEAT VARIETIES ON GROWTH AND DEVELOPMENT OF PLANTS

2018 ◽  
Vol 13 (3) ◽  
pp. 35-38
Author(s):  
Николай Малов ◽  
Nikolay Malov
Keyword(s):  
Spring Wheat ◽  
Growth And Development ◽  
Cumulative Effect ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Mineral Fertilizers ◽  
Potential Yield ◽  
Wheat Varieties ◽  
Vegetative Period ◽  
Phenological Phases

The article deals with the growth and development of spring wheat plants, depending on the variety in the conditions of the Chuvash Republic. The rate and rhythm of development of field crops, the time of onset of phenological phases and the duration of the vegetation period generally determine the hereditary nature of plant varieties and the cumulative effect of all factors of plant life. A variety is a biological foundation on which all other elements of high productivity are built and one of the main factors of stable production of spring wheat grain. Strong and valuable varieties of spring wheat with a high potential yield, good responsiveness to mineral fertilizers and changes in agrotechnics during cultivation, resistant to unfavorable weather conditions during the vegetative period of plants, lodging, diseases, forming strong grain quality are used for cultivation. In this case, the variety is considered as the cheapest and available means of increasing the productivity of plants. In our studies for all the years of research, the onset of phenological phases of development depended on both varietal features, meteorological conditions during the vegetative period of plants and the biological characteristics of the varieties under study.

scholarly journals Seeding Rate Effects on Hybrid Spring Wheat Yield, Yield Components and Quality

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1240
Author(s):  
Peder K. Schmitz ◽  
Joel K. Ransom
Keyword(s):  
Spring Wheat ◽  
Yield Components ◽  
Wheat Yield ◽  
Triticum Aestivum L ◽  
Yield Component ◽  
Economic Feasibility ◽  
Protein Yield ◽  
Seeding Rate ◽  
Hard Red Spring Wheat ◽  
End Use

Agronomic practices, such as planting date, seeding rate, and genotype, commonly influence hard red spring wheat (HRSW, Triticum aestivum L. emend. Thell.) production. Determining the agronomic optimum seeding rate (AOSR) of newly developed hybrids is needed as they respond to seeding rates differently from inbred cultivars. The objectives of this research were to determine the AOSR of new HRSW hybrids, how seeding rate alters their various yield components, and whether hybrids offer increased end-use quality, compared to conventional cultivars. The performance of two cultivars (inbreds) and five hybrids was evaluated in nine North Dakota environments at five seeding rates in 2019−2020. Responses to seeding rate for yield and protein yield differed among the genotypes. The AOSR ranged from 3.60 to 5.19 million seeds ha−1 and 2.22 to 3.89 million seeds ha−1 for yield and protein yield, respectively. The average AOSR for yield for the hybrids was similar to that of conventional cultivars. However, the maximum protein yield of the hybrids was achieved at 0.50 million seeds ha−1 less than that of the cultivars tested. The yield component that explained the greatest proportion of differences in yield as seeding rates varied was kernels spike−1 (r = 0.17 to 0.43). The end-use quality of the hybrids tested was not superior to that of the conventional cultivars, indicating that yield will likely be the determinant of the economic feasibility of any future released hybrids.

scholarly journals Nitrogen topdressing and application ways of fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean

2015 ◽  
Vol 87 (4) ◽  
pp. 2301-2307 ◽  
Author(s):  
MATHEUS G. SILVA ◽  
ORIVALDO ARF ◽  
PAULO E. TEODORO
Keyword(s):  
Common Bean ◽  
Weed Control ◽  
Yield Components ◽  
Dry Matter ◽  
Block Design ◽  
Agronomic Performance ◽  
Randomized Block Design ◽  
Bean Yield ◽  
Leaf N Content ◽  
Leaf N

ABSTRACT The objective of this study was to investigate the effect of interaction between nitrogen topdressing and different application ways (active ingredients) a.i. fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean. The experiment was conducted during winter 2003 in Selvíria/MS. The experimental design used was a randomized block design with four replications in a factorial scheme 2x7. The first factor was composed by the absence or presence of nitrogen topdressing, while the second factor consisted of different application ways of fluazifop-p-butyl + fomesafen. The following variables were measured: leaf N content, dry matter of plants, yield components (number of pods plant-1, number of grains plant-1, the average number of grains pod-1 and mass of 100 grains), grain yield, phytotoxicity and weed control percentage. The nitrogen topdressing with 75 kg ha-1provided higher dry matter of plants, higher weed control and higher common bean yield of irrigated winter. In the absence of nitrogen topdressing in the application of urea before or together to fluazifop-p-butyl + fomesafen increased their effectiveness in controlling weeds without interference in the agronomic performance of common bean.

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