scholarly journals Responses of Seed Yield Components to the Field Practices for Regulating Seed Yield of Smooth Bromegrass (Bromus inermis Leyss.)

Agriculture ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 940
Author(s):  
Chengming Ou ◽  
Mingya Wang ◽  
Longyu Hou ◽  
Yangyang Zhang ◽  
Ming Sun ◽  
...  
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Bromus Inermis ◽  
Row Spacing ◽  
Smooth Bromegrass ◽  
Agronomic Practices ◽  
Seed Yield Components ◽  
Key Factor ◽  
Negative Effect ◽  
Phosphorus Application

Agronomic practices improve seed yield by regulating seed yield components, and the relationship between seed yield and seed yield components is still unclear in smooth bromegrass (Bromus inermis). To optimize seed production and yield in smooth bromegrass, a five-year field trial was designed with split-split-plot to study the combined effects of row spacing (30, 45, 60, and 75 cm), phosphorus (0, 60, 90, and 120 kg P ha−1) and nitrogen (0 and 100 kg N ha−1) on seed yield and seed yield components including fertile tillers m−2 (FTs), spikelets per fertile tiller (SFT), florets per spikelet (FS), and seeds per spikelet (SS). The results showed that FTs as a key factor had a positive effect to seed yield with the biggest pathway coefficient, while SS had a negative effect. Meanwhile, an interaction effect between FTs and SS was observed. FS and SS were increased with phosphorus application under the condition of sufficient nitrogen. In addition, sufficient precipitation at the non-growing season resulted in more FTs in the next year in rain-fed regions. Therefore, the optimum seed yield of smooth bromegrass can be obtained with row spacing (45 cm), nitrogen (100 kg N ha−1), and phosphorus application (60 kg P ha−1).

Influence of year and row spacing on yield component andseed yield in Alfalfa (Medicago sativa L.)

2016 ◽  
Author(s):  
Wenxu Zhang ◽  
Fangshan Xia ◽  
Yin Li ◽  
Mingya Wang ◽  
Peisheng Mao
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Northwest China ◽  
Yield Component ◽  
Row Spacing ◽  
Growing Seasons ◽  
Seed Yield Components ◽  
Alfalfa Seed ◽  
Medicago Sativa L ◽  
Semi Arid

A 5 year field experiment was conducted to investigate the influence of different yearly climatic features and row spacing on seed yield and seed yield components during the 2008-2012 growing seasons in semi-arid soils in northwest China. Rows pacing treatments were 30, 60, 90, and 120 cm. Seed yield and some seed yield components were determined for all treatments. The year affected seed yield components markedly, but row spacing except for the quantity of seeds per pod. The interaction of year and row spacing have a significant impact on racemes per square meter and seed yield (P less than 0.05). The highest seed yield was gained in the fifth year (409.83 kg ha-1) with 60 cm row spacing (456.30kg ha-1). These results indicated that alfalfa should be planted with 60cm row spacing, which was most productive for improving the alfalfa seed yield in semi-arid lands.

Influence of Row Spacing and P and N Applications on Seed Yield Components and Seed Yield of Siberian Wildrye (Elymus sibiricusL.)

Crop Science ◽  
2017 ◽  
Vol 57 (4) ◽  
pp. 2205-2212 ◽  
Author(s):  
Mingya Wang ◽  
Longyu Hou ◽  
Qiang Zhang ◽  
Xiaona Yu ◽  
Li Zhao ◽  
...  
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Row Spacing ◽  
Seed Yield Components

Breeding for Seed Yield and Seed Quality in Smooth Bromegrass, Bromus inermis Leyss . 1

Crop Science ◽  
1970 ◽  
Vol 10 (5) ◽  
pp. 539-542 ◽  
Author(s):  
R. P. Knowles ◽  
D. A. Cooke ◽  
E. Buglass
Keyword(s):  
Seed Yield ◽  
Seed Quality ◽  
Bromus Inermis ◽  
Smooth Bromegrass

Is the flag leaf important in perennial ryegrass seed production?

2010 ◽  
Vol 14 ◽  
pp. 67-73
Author(s):  
J.A.K. Trethewey ◽  
M.P. Rolston
Keyword(s):  
Seed Yield ◽  
Perennial Ryegrass ◽  
Yield Components ◽  
Seed Weight ◽  
Photosynthetic Capacity ◽  
Flag Leaf ◽  
Active Radiation ◽  
Seed Yield Components ◽  
Seed Fill ◽  
Thousand Seed Weight

In cereals, the importance of the flag leaf for contributing carbohydrate during seed fill is well documented. However, in ryegrass this relationship is not so clear. This paper reports on an investigation of the effect on seed yield components of reduced photosynthetic capacity to the flag leaf, stem and head of perennial ryegrass (Lolium perenne). The hypothesis was that reduced photosynthetic capacity of the flag leaf does not affect seed yield components in perennial ryegrass. Following flowering, photosynthetic capacity was reduced by defoliation or shading the flag leaf, stem, or head of individual tillers. Seed yield components were measured at harvest. Reduced photosynthetically active radiation (PAR) to the flag leaf and stem did not affect thousand seed weight or seed yield when compared with control plants whereas reducing PAR to the head had a significant effect. The seed head itself may be more important than the flag leaf during seed fill, but when the seed head is shaded substantial re-mobilisation of stored carbohydrates can occur. Keywords: flag leaf, green leaf area, Lolium perenne, photosynthetically active radiation, seed fill, seed yield, thousand seed weight, water-soluble carbohydrates

scholarly journals Genetic variation for seed yield components of Westerwold ryegrass (Lolium multiflorum var. westerwoldicum).

1989 ◽  
Vol 37 (2) ◽  
pp. 119-127 ◽  
Author(s):  
A. Elgersma ◽  
A.P.M. Den Nijs ◽  
F.A. Van Eeuwijk
Keyword(s):  
Genetic Variation ◽  
Seed Yield ◽  
Yield Components ◽  
Lolium Multiflorum ◽  
Genotypic Variation ◽  
Yield Component ◽  
Path Analyses ◽  
Seed Yield Components ◽  
High Heritability ◽  
1000 Grain Weight

Genetic variation for seed yield components was studied in 4 diploid varieties of Westerwold ryegrass, and 19 genotypes from each variety were grown in the field in 2 clonal replicate rows (minirows). The number of inflorescences/minirow, the numbers of spikelets/inflorescence and florets and seeds/spikelet, 1000-grain weight and seed yield/minirow were determined. Floret site utilization (FSU) was calculated as (seeds/floret) x 100%. Genotypic variation and heritabilities were calculated. Correlation studies and path analyses were carried out in each variety separately. Among varieties, no significant differences occurred for seed yield. However, within varieties large genetic variation was present for both seed yield and yield components. Path analyses revealed that relationships between seed yield components differed to a great extent among varieties. FSU was the major yield component in 3 varieties, but in one variety inflorescence number was the most important yield component. There was ample scope for genetic improvement of seed yield. FSU had a very high heritability and was not correlated with any of the other seed yield components. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Heritabilities and phenotypic correlations for seed yield and seed yield components of beans

1969 ◽  
Vol 72 (2) ◽  
pp. 301-308
Author(s):  
Manuel Mateo Solano ◽  
James S. Beaver ◽  
Freddy Saladín García
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Narrow Sense ◽  
Phenotypic Correlations ◽  
Seed Yield Components ◽  
F2 Generation ◽  
Seed Yields ◽  
Advanced Generation ◽  
Weight Number ◽  
100 Seed Weight

Indeterminate bean (Phaseolus vulgaris L.) lines derived from crosses between small-seeded indeterminate and large-seeded determinate genotypes were used to estimate the heritabilities and phenotypic correlations for seed yield and seed yield components. The F2  generation of six bean populations was planted at the Fortuna Substation, Juana Díaz, Puerto Rico, in October 1984. Seed yield per plant, 100 seed weight, number of pods per plant, and number of seed per pod were measured for 50 plants selected at random from each population. A total of 50 F3 plant rows of each population were planted in February 1985 at the Fortuna Substation, and in March 1985 on a small farm in the Constanza valley of the Dominican Republic. Narrow sense heritabilities were estimated by using parent-offspring regressions of the F2 and F3 generation, and phenotypic correlations were estimated by using means of the F3 lines. Mean seed yields per plant of the indeterminate F3 lines were significantly less than the indeterminate parents, whereas the 100-seed weights of the indeterminate F3 were significantly less than the determinate parents. Narrow sense heritabilities for seed yield and seed yield components were intemediate to low. These results indicate that selection for greater seed yield would be more effective by evaluating advanced lines in replicated trials. Spearman rank correlations between locations for seed yield and seed yield components varied among populations. Multilocation testing of advanced generation lines may be the most effective way to identify bean genotypes that perform well in contrasting environments.

Evaluation of seed yield and seed yield components in red–yellow (Pisum fulvum) and Ethiopian (Pisum abyssinicum) peas

2012 ◽  
Vol 60 (2) ◽  
pp. 629-638 ◽  
Author(s):  
Aleksandar Mikić ◽  
Vojislav Mihailović ◽  
Miodrag Dimitrijević ◽  
Sofija Petrović ◽  
Branko Ćupina ◽  
...  
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Pisum Fulvum ◽  
Seed Yield Components

scholarly journals Seed Yield Components and Seed Quality of Oilseed Rape Are Impacted by Sulfur Fertilization and Its Interactions With Nitrogen Fertilization

2019 ◽  
Vol 10 ◽  
Author(s):  
Emilie Poisson ◽  
Jacques Trouverie ◽  
S. Brunel-Muguet ◽  
Yacine Akmouche ◽  
Célia Pontet ◽  
...  
Keyword(s):  
Oilseed Rape ◽  
Seed Yield ◽  
Nitrogen Fertilization ◽  
Yield Components ◽  
Seed Quality ◽  
Seed Yield Components ◽  
Sulfur Fertilization
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