Seed coat specific weight in Lupinus angustifolius: influence of genotype and environment and relationship with seed coat proportion

2004 ◽  
Vol 55 (11) ◽  
pp. 1189 ◽  
Author(s):  
M. Mera ◽  
R. Jerez ◽  
H. Miranda ◽  
J. L. Rouanet
Keyword(s):  
Seed Coat ◽  
Seed Weight ◽  
Mass Density ◽  
Selection Criterion ◽  
Specific Weight ◽  
Equal Mass ◽  
Lupinus Angustifolius ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Selection For

Abstract. The relatively high seed coat proportion of the narrow-leafed lupin reduces its economic value. This character has been shown to be affected by seed weight, and this limits the use of seed coat proportion as a selection criterion. We examined the variation for seed coat specific weight, a potential alternative selection criterion, and tested its relationship with seed coat proportion and seed weight. Seeds were sampled from mainstem pods of 14 winter-sown genotypes of Lupinus angustifolius L. grown at 4 southern Chile sites over 2 years. Seed coat specific weight had an overall mean of 30.1 mg/cm2. Highly significant genotypic effects were found (range 28.9–32.1 mg/cm2). The ranges for sites and years were 29.1–31.1 and 28.9–31.2 mg/cm2, respectively. Genotypes interacted significantly with years, but not with sites. Broad-sense heritability was 0.59, a value that predicts a good response to selection for this character. Seed coat specific weight was weakly correlated (rph = 0.11*) with seed coat proportion, and was not associated with mean seed weight. Seed coat proportion was negatively correlated with mean seed weight (rph = –0.75***) and had high broad-sense heritability (0.95). The correlation between seed coat specific weight and a theoretical seed coat thickness, calculated under the assumptions of equal mass density of seed coat, cotyledons, and embryo, and a spherical-shaped seed, was r = 0.14*. Phenotypic and genotypic correlations between seed coat specific weight and number of seeds per pod were 0.41 and 0.84, respectively. Our results indicate that selection for low seed coat proportion will lead to larger seeded genotypes, but will not reduce seed coat specific weight. Selection for low seed coat proportion after crosses would presumably be effective in reducing seedcoat specific weight if all segregating materials were uniformly large seeded, but that scenario is unrealistic. The evidence presented here suggests that selection for low seed coat specific weight (or measures correlated with it) in segregating populations will be necessary in order to increase the proportion of higher value kernels in seeds and to improve the economic yield of lupins.

Genotypic and environmental effects on pod wall proportion and pod wall specific weight in Lupinus angustifolius

2004 ◽  
Vol 55 (4) ◽  
pp. 397 ◽  
Author(s):  
M. Mera ◽  
C. Harcha ◽  
H. Miranda ◽  
J. L. Rouanet
Keyword(s):  
Seed Weight ◽  
Specific Weight ◽  
Lupinus Angustifolius ◽  
Southern Chile ◽  
Coefficients Of Variation ◽  
Genetic Level ◽  
Pod Wall ◽  
Selection For ◽  
Western Australian ◽  
Genotypic Effects

Fourteen winter-sown genotypes of Lupinus angustifolius L., comprising most of the Western Australian cultivars released since 1986, were studied over 2 years at 4 southern Chile locations. Pod wall proportion, pod wall specific weight, seed number per pod, mean seed weight, seed weight per pod, wall weight per pod, and mean pod weight were measured, separately sampling pods from the mainstem and pods from branches. The 2 pod positions differed significantly for all characteristics except wall weight per pod. Lower coefficients of variation and greater heritabilities for both pod wall proportion and pod wall specific weight were achieved with a sample of pods from branches than with a sample from the mainstem.The ranges for pod wall proportion and pod wall specific weight were small (31.8–35.8% and 27.0–34.7 mg/cm2, respectively); however, highly significant genotypic effects were found for both characters. Heritability estimates were moderate for pod wall proportion (0.27 and 0.44 for pods from mainstem and branches, respectively) and moderate to high for pod wall specific weight (0.56 and 0.61, respectively).Pod wall proportion and pod wall specific weight were significantly correlated, more so at the genetic level (rg�=�0.83 and rg = 0.76 for pods from mainstem and branches, respectively) than at the phenotypic level (rph = 0.57 and rph = 0.60, respectively). Pod wall specific weight was closely associated with wall weight per pod, meaning that larger pods call for thicker pod walls. Accordingly, selection for low pod wall specific weight in a breeding program could lead to light pods. Correlations with mean seed weight indicate that this trait could decrease as well.

scholarly journals Heritability and variance components of grain morphometric traits of bread wheat and durum wheat

2015 ◽  
Vol 60 (3) ◽  
pp. 247-261
Author(s):  
Gordana Brankovic ◽  
Dejan Dodig ◽  
Desimir Knezevic ◽  
Nenad Djuric ◽  
Vesna Kandic
Keyword(s):  
Durum Wheat ◽  
Bread Wheat ◽  
Sum Of Squares ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Morphometric Traits ◽  
Grain Length ◽  
Selection For ◽  
Grain Width ◽  
Very High

The aim of this work was to examine variability and broad-sense heritability of grain morphometric traits of 30 selected genotypes of bread wheat and durum wheat, in regard to their significant impact on yield and traits of milling, baking and processing quality. Trials with selected wheat assortment were set during 2010-2011 and 2011-2012 years at the three locations: Rimski Sancevi, Zemun Polje and Padinska Skela. Results of this investigation showed that the genotype was the most significant source of variation of grain length for bread and durum wheat with 91.1% and 46.3% of explained sum of squares, while the environment was the most important source of variation of grain width and grain thickness for bread wheat (44% and 41.2% of sum of squares) and durum wheat (42% and 44% of sum of squares). Broad-sense heritability was very high (> 90%) for grain length of bread and durum wheat, grain width of durum wheat and grain thickness of durum wheat. Broad-sense heritability was high for grain width and grain thickness of bread wheat, with the values of 83% and 88.8%, respectively. Considering the high obtained values of broad-sense heritability and dominance of the genetic component of variance of grain length, grain width and grain thickness of bread and durum wheat, the success of selection for increased values of these traits can be predicted.

Estimation of genetic variability for seed yield and its components in chickpea (Cicer arientinum L.) genotypes

2017 ◽  
Author(s):  
Aybegün Ton ◽  
Adem Emin Anlarsal
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Yield Component ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Design Data ◽  
Climate Conditions ◽  
100 Seed Weight

The present experiment was conducted to determine magnitude of genetic variability with fifteen kabuli chickpea genotypes in the 2013/2014 and 2014/2015 growing season under Mediterranean climate conditions. In this present study seed yield per plant and yield component were investigated. The experiment was orginazed with three replications in randomized complate blocks design. Data were recorded on plant height, number of branches per plant, height of first podding node, full and total pods number per plant, seeds number per plant, 100-seed weight and seed yield per plant. Analysis of variance for seed yield per plant and its component showed significant differences among all genotypes. Broad-sense heritability ranged from 12.27% (total pod number per plant) to 93.88% (100-seed weight). Moderate and high estimates of broad sense heritability were observed for branches number per plant, harvest index and 100-seed weight. It can be concluded that the seed yield of chickpea can be improved by selecting these characters in breeding chickpea materials.

scholarly journals Estimation of broad-sense heritability and variance components for seed yield and agronomic traits in native and exotic safflower (Carthamus tinctorius L.) genotypes

2018 ◽  
Vol 47 (3) ◽  
pp. 501-508 ◽  
Author(s):  
Zahra Tahernezhad ◽  
Jalal Saba ◽  
Mehrshad Zeinalabedini ◽  
Seyyed Safid Pourdad ◽  
Mohammad Reza Ghaffari
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Coefficient Of Variation ◽  
Variance Components ◽  
Seed Weight ◽  
Agronomic Traits ◽  
Broad Sense ◽  
Broad Sense Heritability ◽  
Physiological Maturity ◽  
Number Of Seeds

This study was conducted to estimate broad-sense heritability and variance components for seed yield and some agronomic traits in 100 safflower genotypes. The experiments were carried out in two years at two locations in Iran. The number of seeds per capitol and harvest index had the highest genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV), respectively. The estimated broad-sense heritability for plant height, days to physiological maturity, 1000-seed weight, days to flowering, number of seeds per capitol, number of capitols per plant and seed yield were 86, 76, 74, 70, 68, 44 and 16%, respectively. It was found that plant height, days to physiological maturity, 1000-seed weight, days to flowering and number of seeds per capitol were the least influenced by the environment. The number of capitols per plant and seed yield were most affected by the environment.

Variability and Character Association for Yield and Quantitative Traits under Late Sown Conditions in Chickpea (Cicer arietinum L.)

2020 ◽  
Author(s):  
S.K. Jain ◽  
L.D. Sharma ◽  
K.C. Gupta ◽  
Vipen Kumar ◽  
M.R. Yadav
Keyword(s):  
Grain Yield ◽  
Seed Weight ◽  
Quantitative Traits ◽  
Agricultural Research ◽  
Broad Sense ◽  
Path Coefficient ◽  
Broad Sense Heritability ◽  
Path Coefficient Analysis ◽  
100 Seed Weight ◽  
Number Of Seeds

Background: Among all the pulses, chickpea is the most important rabi crop with high acceptability and wider use in India. More availability of quality seed of improved varieties being made available to the famers is one of the most important factors contributing to better harvest of chickpea in recent years. Therefore, there is urgent need for developing high yielding varieties of chickpea employing sound and effective breeding strategies. The study of variability, correlation and path coefficient analysis for seed yield with other yield contributing characters is of immense importance to get information regarding exercising selections for genetic improvement in chickpea.Methods: A total of 40 genotypes of chickpea were undertaken for present study and these genotypes evaluated in randomized block design (RBD) with three replications at Rajasthan Agricultural Research Institute (SKNAU), Jaipur Rajasthan, India under late sown conditions during rabi 2019-20. The experimental unit was four row plots of 4 m long and spacing between row to row was kept to 30 cm and plant to plant was 10 cm. The genetic parameters viz., mean GCV, PCV, broad sense heritability, genetic advance (GA), correlation coefficient and path analysis were estimated.Result: Genotypes revealed significant wide genetic variation for almost all the quantitative traits. Number of pods plant-1 exhibited highest PCV and GCV. The highest broad sense heritability (h2b) was recorded for days to maturity followed by days to 50% flowering and 100-seed weight. The 100-seed weight, number of pods plant-1, number of seeds pod-1 and primary branches plant-1 had positive genotypic correlation with grain yield. Path coefficient analysis depicted that among the 9 causal (independent) traits; number of seeds pod-1, number of pods plant-1, number of primary branches plant-1, plant height from ground to first pod (cm) and days to 50% flowering had positive and directly influence on grain yield. Therefore these traits can be taken into consideration while exercising selection for grain yield in chickpea.

Composition and correlation between major seed constituents in selected lentil (Lens culinaris. Medik) genotypes

2011 ◽  
Vol 91 (5) ◽  
pp. 825-835 ◽  
Author(s):  
Mohammad Tahir ◽  
Nienke Lindeboom ◽  
Monica Båga ◽  
Albert Vandenberg ◽  
Ravindra Chibbar
Keyword(s):  
Seed Coat ◽  
Seed Weight ◽  
Protein Concentration ◽  
Lens Culinaris ◽  
Sucrose Concentration ◽  
Quality Traits ◽  
Raffinose Family Oligosaccharides ◽  
Important Quality ◽  
Selection For ◽  
Nutritional Constituents

Tahir, M., Lindeboom, N., Båga, M., Vandenberg, A. and Chibbar, R. N. 2011. Composition and correlation between major seed constituents in selected lentil ( Lens culinaris Medik.) genotypes. Can. J. Plant Sci. 91: 825–835. Development of lentil cultivars with increased seed amylose, protein and reduced concentration of anti-nutritional constituents are desired from the perspectives of lentil utilization and human health. In selected lentil genotypes, we studied seed weight, seed coat weight and color, seed composition and the association between major quality traits. Significant (P ≤ 0.05) variation existed for all traits except seed coat weight. The starch and protein concentrations ranged from 39.4 to 45.3 g and from 23.8 to 29.3 g 100 g−1 flour DM whereas the amylose concentration ranged from 29.8 to 34.0 g 100 g−1 starch. Glucose, sucrose and raffinose family oligosaccharides (RFO) concentrations of lentil genotypes ranged from 0.04 to 0.08 g, from 0.7 to 2.4 g, and from 4.6 to 6.6 mmoles 100 g−1 flour DM, respectively. Raffinose, stachyose and verbascose concentrations varied from 1.6 to 2.4 g, from 1.7 to 2.9 g, and from 1.2 to 1.9 g 100 g−1 flour DM, respectively. A significant (P ≤ 0.05) positive correlation existed between 1000-seed weight and starch, 1000-seed weight and RFO and sucrose concentration. Similarly, a significant (P ≤ 0 .05) negative correlation was found between starch and protein concentration, 1000-seed weight and protein concentration, and 1000-seed weight and amylose concentration. The lack of a significant correlation between RFO and other quality traits indicates that selection for low RFO concentration may not affect other important quality traits in lentil seeds.

THE INHERITANCE OF OZONE INSENSITIVITY IN SELECTED Phaseolus vulgaris L. POPULATIONS

1982 ◽  
Vol 62 (4) ◽  
pp. 861-865 ◽  
Author(s):  
P. HUCL ◽  
W. D. BEVERSDORF
Keyword(s):  
Phaseolus Vulgaris ◽  
Broad Sense ◽  
Field Conditions ◽  
Broad Sense Heritability ◽  
Phaseolus Vulgaris L ◽  
Selection For ◽  
Heritability Estimates ◽  
Two Populations

Broad sense heritability estimates (H) for ozone (O3) insensitivity in four P. vulgaris F2 populations were high (0.66–0.88) under artifical fumigation conditions. In the F3, under field conditions, broad sense H in two populations had declined to 0.16 and 0.21, probably as a result of the interaction of maturity and injury. The results suggest that selection for O3 insensitivity in early generations should be conducted under controlled fumigation conditions followed by field evaluations as lines approach homozygosity.

scholarly journals Physical seed dormancy in Abrus precatorious (Ratti): a scientific validation of indigenous technique

2021 ◽  
Vol 2 ◽  
Author(s):  
Rajender Kumar Sharma
Keyword(s):  
Indigenous People ◽  
Seed Dormancy ◽  
Seed Coat ◽  
Seed Weight ◽  
Mass Measurement ◽  
Storage Period ◽  
Abrus Precatorius ◽  
Moisture Storage ◽  
Moisture Conditions ◽  
Scientific Validation

Abstract Seeds of Abrus precatorius L. (Fabaceae) were used as weight measure by Indigenous people. Where, the seeds were referred as Ratti; a traditional Indian unit of mass measurement. Seed weight fluctuates depending upon age, moisture, storage-period/conditions. Therefore, use of seeds as a weighing unit become dubious and need to be validated. For this purpose, seeds of A. precatorious were subjected to different moisture conditions and periodically monitored. Surprisingly, there was no change in seed weight was observed, indicating the impermeability of seed coat. The later was confirmed by scarification of seed coat which resulted in 53% increase in seed weight against 0% in control. Further, presence of a potent toxin (abrin) in the seed coat protects it from pests and microbes, and contributes to the maintenance of impermeability for longer period of time. The data validates the use of A. precatorious seeds as a weighing unit (ratti) by the indigenous people and discussed.

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