scholarly journals Heritability and Correlation of Biomass, Growth Rates, Harvest Index, and Phenology to the Yield of Common Beans

1991 ◽  
Vol 116 (1) ◽  
pp. 127-130 ◽  
Author(s):  
B.T. Scully ◽  
D.H. Wallace ◽  
D.R. Viands
Keyword(s):  
Growth Rate ◽  
Seed Yield ◽  
Harvest Index ◽  
Genetic Correlations ◽  
Indirect Selection ◽  
The Other ◽  
Biomass Growth ◽  
Economic Growth Rate ◽  
Seed Growth ◽  
Days To Maturity

One-hundred-twelve common bean (Phaseolus vulgaris L.) lines of diverse origin were grown in three environments in 1986 and two environments in 1987. The purpose was to estimate broad-sense heritabilities of nine yield-related traits and the phenotypic, genetic, and environmental correlations among them. The traits and their heritabilities were seed yield (0.90), biomass (0.93), harvest index (0.92), days to maturity (0.96), days to flower (0.98), days of pod fill (0.94), biomass growth rate (biomass/days to maturity) (0.87), seed growth rate (seed yield/days of pod fill) (0.87), and economic growth rate (seed yield/days to maturity) (0.86). These high heritabilities were attributed to the broad genetic diversity and the comparatively small variances associated with the genotype × environment interactions. Genetic correlations of yield were: with biomass, 0.86; harvest index, 0.42; days to maturity, 0.40; days to flower, 0.33; days of pod fill, 0.24; biomass growth rate, 0.92; seed growth rate, 0.84; and the economic growth rate, 0.85. The concomitant phenotypic correlations were mostly equal to the genetic correlations for biomass and the three growth rates, but lower for the phonological traits (days to maturity, flower, and pod fill). Harvest index had the lowest correlations with yield. Correlations were also reported for the other 28 pairwise combinations among these nine traits. Indirect selection was explored with yield as the primary trait and the other eight as secondary traits. Estimates of relative selection efficiency (p) suggested that indirect selection was not a viable option for increasing common bean yields or identifying superior parents.

scholarly journals Variation in and Relationship of Biomass, Growth Rate, Harvest Index, and Phenology to Yield of Common Bean

1990 ◽  
Vol 115 (2) ◽  
pp. 218-225 ◽  
Author(s):  
B.T. Scully ◽  
D.H. Wallace
Keyword(s):  
New York ◽  
Growth Rate ◽  
Common Bean ◽  
Growth Rates ◽  
Harvest Index ◽  
Quadratic Function ◽  
Curvilinear Relationship ◽  
Sink Strength ◽  
Biomass Growth ◽  
Days To Maturity

A diverse set of 112 common bean (Paseolus vulgaris L.) accessions were evaluated for variation in eight traits related to yield over a 2-year period. Days to flower, days of pod fill, and days to maturity ranged from 25 to 66, 44 to 83, and 70 to 133, respectively, in upstate New York: Yield and biomass ranged from 81 to 387 and 270 to 1087 g•m-2, respectively. Harvest index ranged from 12% to 65%. The biomass (biomass/days to maturity) and seed (yield/days of pod fill) growth rates ranged from 3.2 to 9.3 and 1.2 to 9.5 g•m-2 -day-1, respectively. The economic growth rate (yield/days to maturity) extended from 0.6 to 5.7 g•m-2 -day-1. The growth rates, biomass, and days of pod fill were linearly and positively related to yield. Biomass and the growth rates explained a large amount of the variation in yield, with r2 values between 0.71 and 0.84; days of pod fill explained the least, with r2 = 0.09. Yield followed a curvilinear relationship with days to flower and days to maturity; yield was maximized at 48.5 days to flower and 112.2 days to maturity. Yield was a quadratic function of harvest index and maximized at 57.2%. Among these three curvilinear traits, days to flower explained 80% of the variation in yield, while days to maturity and harvest index accounted for 25% and 12.5%, respectively. The “ideal” genotype for New York was defined at these maximum values for harvest index, days to maturity, days to flower, and at 63.7 days of pod fill. Additionally, a simple equation is proposed to aid breeders in the selection of common bean accessions with strong sink strength. It is defined as “relative sink strength”: RSS = seed growth rate/biomass growth rate. Values > 1.0 implied strong sink capacity in common beans.

scholarly journals Genetic Divergance in F2 Generation of Interspecific Hybrids in Grain and Vegetable Purpose Cowpea

2019 ◽  
pp. 1-5
Author(s):  
Krishnaja R. Nair ◽  
S. S. Desai ◽  
B. L. Thaware
Keyword(s):  
Seed Yield ◽  
Genetic Divergence ◽  
Interspecific Hybrids ◽  
Harvest Index ◽  
Pod Yield ◽  
Days To Maturity ◽  
Donor Parent ◽  
F2 Generation ◽  
Clustering Pattern ◽  
Multilocation Trials

A field experiment was conducted with 25 hybrids and their 14 parents of cowpea to study the diversity among the genotypes which were grouped in to 7 clusters revealing the presence of considerable diversity in the material. The clustering pattern of the varieties usually did not confirm to geographical distribution. Cluster-II got desirable rating in respect of maximum harvest index, seed yield per plant and minimum days to maturity where cluster V got maximum number of pods per plant, green pod yield per plant and dry pod yield per plant where all yield related components that could be directly tested in multilocation trials for their suitability or could be used as a donor parent in breeding programme. The characters like plant height, green pod yield per plant and dry pod yield per plant were found to contribute much to the total genetic divergence in cowpea.

scholarly journals Variation in morpho-physiological characters and yield components of summer mungbean (Vigna radiata (L.) Wilczek) varieties

2018 ◽  
Vol 44 (3) ◽  
pp. 469-473
Author(s):  
MMA Mondal ◽  
MA Malek ◽  
AB Puteh
Keyword(s):  
Seed Yield ◽  
Vigna Radiata ◽  
Yield Components ◽  
Unit Area ◽  
The Other ◽  
Cropping Pattern ◽  
Yield Attributes ◽  
Area Basis ◽  
Days To Maturity ◽  
Physiological Characters

Twelve modern summer mungbean cultivars were evaluated to assess morpho-physiological characters, yield attributes and seed yield. Results revealed that high yielding cultivars, in general, showed superiority in morpho-physiological characters and seed yield/plant than the low yielding cultivars. However, in case of unit area basis, result revealed that seed yield/ha was greater in low yielding cultivars than the high yielding ones, yet they produced lower seed yield/plant compared to high yielding ones due to increase number of plants per unit area and these low yielding cultivars also matured 10 - 15 days earlier than high yielders. Among the cultivars, BINAmung-5 produced the highest seed yield/ha (1711 kg/ha) with lower HI (20.0%) and took longer days to maturity (69 days). On the other hand, BARImung-6 showed second highest seed yield (1697 kg/ha) with highest HI (32.6%) and matured earliest, took 60 days after sowing that might be fit the existing cropping pattern in Bangladesh.

scholarly journals Effect of pattern of water supply on Vicia faba L. 1. Dry matter partitioning and yield variability.

1990 ◽  
Vol 38 (1) ◽  
pp. 21-44 ◽  
Author(s):  
C. Grashoff
Keyword(s):  
Seed Yield ◽  
Harvest Index ◽  
Dry Matter ◽  
The Other ◽  
Yield Variability ◽  
Small Range ◽  
Full Irrigation ◽  
Dry Matter Partitioning ◽  
Vicia Faba L ◽  
Seed Yields

V. faba cultivars including cv. Minica, Kristall, Alfred and Optica were grown with (a) full irrigation, or restricted irrigation (b) after the start of flowering, (c) after the end of flowering, (d) before flowering or (e) during flowering. Irrigation from the start of flowering stimulated vegetative growth but reduced initial reproductive growth and final seed yield compared with restricted water during flowering only. In 1982-84 using cv. Minica, treatment (e) gave high av. seed yields (7 t/ha), optimum harvest index (0.61 g/g) and a relatively small range of seed yields (2.2 t/ha), while (d) gave 7.1 t/ha, lower harvest index (0.57) and a small range of seed yields (1.4 t/ha). The other treatments and no irrigation gave much lower seed yields and a larger range of seed yields. Treatment (c) gave the lowest harvest index. Similar results were obtained with cv. Alfred. It was concluded that the amount and distribution of rainfall was a major reason for variability in seed yield of this crop. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Correlation and path analysis for grain yield and yield components in chickpea (Cicer arietinum L.)

Genetika ◽  
2017 ◽  
Vol 49 (1) ◽  
pp. 273-284 ◽  
Author(s):  
Hossein Astereki ◽  
Peyman Sharifi ◽  
Masoumeh Pouresmael
Keyword(s):  
Path Analysis ◽  
Seed Yield ◽  
Yield Components ◽  
Harvest Index ◽  
Correlation Coefficients ◽  
Canopy Height ◽  
Flowering Period ◽  
Days To Flowering ◽  
Days To Maturity ◽  
Positive Direct

Chickpea is the second most important pulse crop in the world after dry bean. The aim of this study was to estimate the correlation coefficients and path analysis between seed yield, morphological traits and yield components. Twenty five chickpea genotypes, including advanced lines and commercial varieties, were grown under dryland condition at Brojerd Agricultural Research Station (west of Iran) during two seasons (2012-2013 and 2013-2014). The field experiment was arranged in a randomized complete block design (RCBD) with four replications. Combined analysis of variance revealed that the studied genotypes differed significantly in seed yield, days to flowering, days to maturity, flowering period, canopy height, number of pods per plant, biological yield and harvest index. The correlation coefficients indicated that there were significant and positive correlations between seed yield and number of pods per plant and harvest index in two years. Path analysis indicated that days to flowering, days to maturity, canopy height and width, number of pods per plant and flowering period directly and indirectly affected seed yield. Therefore, this study suggested that chickpea improvement program could be based on these traits, especially number of pods per plant and canopy height, according to positive direct effect on seed yield over two years, as selection criteria.

Heritability, correlated response, and indirect selection involving spectral reflectance indices and grain yield in wheat

2007 ◽  
Vol 58 (5) ◽  
pp. 432 ◽  
Author(s):  
M. A. Babar ◽  
M. van Ginkel ◽  
M. P. Reynolds ◽  
B. Prasad ◽  
A. R. Klatt
Keyword(s):  
Grain Yield ◽  
Spectral Reflectance ◽  
Genetic Correlations ◽  
Grain Filling ◽  
Indirect Selection ◽  
The Other ◽  
Correlated Response ◽  
Response To Selection ◽  
Selection For ◽  
Reflectance Indices

The objectives of this study were to assess the potential of using spectral reflectance indices (SRIs) as an indirect selection tool for grain yield in wheat under irrigated conditions. This paper demonstrates the genetic correlation between grain yield and SRIs, heritability and expected response to selection for grain yield and SRIs, correlated response to selection for grain yield estimated from SRIs, and efficiency of indirect selection for grain yield using SRIs in different spring wheat populations. Four field experiments, GHIST (15 CIMMYT globally adapted genotypes), RLs1 (25 random F3-derived families), RLs2 (36 random F3-derived families), and RLs3 (64 random F5-derived families) were conducted under irrigated conditions at the CIMMYT research station in north-west Mexico in 3 different years. Spectral reflectance was measured at 3 growth stages (booting, heading, and grain filling) and 7 SRIs were calculated using average values of spectral reflectance at heading and grain filling. Five previously developed SRIs (PRI, WI, RNDVI, GNDVI, SR), and 2 newly calculated SRIs (NWI-1 and NWI-2) were evaluated in the experiments. In general, the within- and between-year genetic correlations between grain yield and SRIs were significant. Three NIR-based indices (WI, NWI-1, and NWI-2) showed higher genetic correlations (0.73–0.92) with grain yield than the other indices (0.35–0.67), and these observations were consistent in all populations. Broad-sense heritability estimates for all indices were in general moderate to high (0.60–0.80), and higher than grain yield (0.45–0.70). The realised heritability for the 3 NIR-based indices was higher than for the other indices and for grain yield itself. Expected response to selection for all indices was moderate to high (0.54–0.85). The correlated response for grain yield estimated from the 3 NIR-based indices (0.59–0.64) was much higher than the correlated response for grain yield estimated from the other indices (0.31–0.46), and the efficiency of indirect selection for these 3 NIR-based indices was 90–96% of the efficiency of direct selection for grain yield. These results demonstrate the potential for using the 3 NIR-based SRI tools in breeding programs for selecting for increased genetic gains for yield.

Biomass and yield performance of kabuli chickpea cultivars with the fern or unifoliate leaf trait in the Northern Great Plains

2006 ◽  
Vol 86 (4) ◽  
pp. 1089-1097 ◽  
Author(s):  
Lin Li ◽  
Rosalind A Bueckert ◽  
Yantai Gan ◽  
Tom Warkentin
Keyword(s):  
Growth Rate ◽  
Great Plains ◽  
Harvest Index ◽  
Crop Growth ◽  
Plant Population ◽  
The Other ◽  
Northern Great Plains ◽  
Above Ground Biomass ◽  
Crop Growth Rate ◽  
Ground Biomass

Chickpea (Cicer arietinum L.) has two kinds of leaf types, the fern and unifoliate. The best leaf type to use for biomass production and yield in the short growing season of the Northern Great Plains, which has a semiarid environment with end of season rainfall, is not yet known. The objectives of this research were to determine the relationships between leaf type and crop growth rate, maximum above-ground biomass, harvest index and yield under moderate and high plant population densities. The study was conducted in the field at Saskatoon and Swift Current, Saskatchewan, in 2003 and 2004. The experimental treatments consisted of a factorial combination of six commercial kabuli chickpea cultivars representing the two leaf types and two plant population densities: 45 and 85 plants m-2. There were no cultivar and plant population interactions for crop growth rate, maximum above-ground biomass, harvest index and seed yield. Dry matter production was higher in the 2004 season, which had above-average rainfall and a longer duration of reproductive growth. Although high plant population exhibited higher maximum above-ground biomass in 3 location-years, plant population did not affect the crop growth rate. The 45 plants m-2 treatment had a higher harvest index than the 85 plants m-2 treatment in 2 location-years, but both population treatments were similar in the other two environments. Yield of chickpea was increased by higher plant population in 1 location-year, but was not affected by plant population in the other location-years. The fern leaf cultivars had a higher crop growth rate over the unifoliate leaf cultivars in 2 location-years and no significant difference in the other environment. Fern-leaf cultivars partitioned more dry matter to seed growth compared with unifoliate cultivars while sustaining similar biomass production as unifoliate cultivars. The use of fern-leaf cultivars in the Northern Great Plains appears to be an opportunity for increasing chickpea yield by its superior harvest index compared with unifoliate leaf cultivars. Key words: Cicer arietinum, fern leaf, unifoliate, plant population, seed yield

scholarly journals Performance of two promising mutants of sesame under some on-station and on-farm environments

1970 ◽  
Vol 7 (1) ◽  
pp. 19-22
Author(s):  
MA Malek ◽  
FI Monshi
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
The Other ◽  
Mutant Line ◽  
New Variety ◽  
Plant Seeds ◽  
Days To Maturity ◽  
Mutant Lines ◽  
On Farm ◽  
Number Of Branches

An experiment was conducted in different farms of BINA sub-station at Magura and Ishurdi and in the farmers' field at Nachole upazila of Chapai Nowabgonj and Tetulia upazila of Panchagor during kharif-I to evaluate the performance of sesame mutant lines (SM-5 and SM-12). The tested parameters included: plant height, branches per plant, capsules per plant, seeds per capsule, days to maturity and yield per ha. Highly significant variations were observed both in individual location and combined over locations for all traits except number of capsules per plant in on-station trial. On the other hand, highly significant variations were observed for all traits except capsules per plant in Nachole upazila of Chapai Nowabgonj and combined over locations. The mutant line SM-12 can be registered as a new variety of sesame in respect of higher number of branches per plant, capsules per plant and higher seed yield. Keyword: Mutant; Sesame; On-station; On-farm DOI: 10.3329/jbau.v7i1.4792 J. Bangladesh Agril. Univ. 7(1): 19-22, 2009

Combining ability studies under salinity stress and unstressed condition in chickpea

2016 ◽  
Author(s):  
M. Y. Dudhe ◽  
J. Kumar
Keyword(s):  
Salinity Stress ◽  
Seed Yield ◽  
Harvest Index ◽  
Genetic Basis ◽  
Stress Condition ◽  
Gene Action ◽  
Additive Gene Action ◽  
Days To Maturity ◽  
Additive Gene ◽  
Salinity Stress Tolerance

The present study was carried out to generate some information on the genetic basis for salinity tolerance in chickpea. Results indicated that the additive as well as non-additive gene action was important for all the traits under unstressed as well as salinity stress condition. Parent Pusa 1103 was a good combiner for RWC, MSI, seed yield and harvest index both under unstressed and salinity stress condition. DG 72 was a good combiner for RWC and parent SAKI 9516 for days to maturity both under unstressed and salinity stress. Two crosses Pusa 1103 x DG 72 and cross Pusa 1103 x DG 54 were best among all the crosses studied for seed yield per plant. While selecting best crosses for salinity stress tolerance besides giving more importance to salinity indices the seed yield per plant need to be considered. The present findings will help the chickpea breeder in deciding the breeding program aimed at improvement of salinity stress tolerant varieties in chickpea.

A water deficit during pod development in lentils reduces flower and pod numbers but not seed size

2006 ◽  
Vol 57 (4) ◽  
pp. 427 ◽  
Author(s):  
R. Shrestha ◽  
N.C. Turner ◽  
K. H. M. Siddique ◽  
D. W. Turner ◽  
J. Speijers
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Water Deficit ◽  
Seed Size ◽  
Seed Yield ◽  
Dry Matter ◽  
Leaf Water ◽  
Seed Growth ◽  
Pod Development ◽  
Seed Fill

An experiment was conducted under controlled conditions in a glasshouse to determine the sensitivity of reproductive development of lentil (Lens culinaris Medikus) genotypes of different origins to water deficit. The 3 genotypes were Cassab (West Asia), Simal (South Asia), and ILL 7979 a crossbred between a West Asian genotype and a South Asian genotype. Two watering treatments, a well-watered control and a water-deficit treatment, were imposed from the beginning of podding. Leaf water relations, total dry matter production, leaf area, and number of flowers, pods, and seeds were measured from podding to maturity. In the well-watered plants the leaf water potential (ψleaf) before sunrise ranged from −0.6 to −0.8 MPa. When subjected to water deficit, ψleaf fell to about −3.0 MPa. Genotypes did not show variation in vegetative growth or seed yield under either well-watered or water-deficit conditions, but they differed significantly in the number of flowers, fruiting nodes, pods, and seeds, and harvest index (HI). Seed size in Cassab was 61% larger than ILL 7979 and 105% larger than Simal. The small-seeded genotypes produced the highest number of fruiting nodes and hence a greater number of flowers, pods, and seeds. Seed size was positively correlated with seed growth rate (r = 0.77**) and seed fill duration (r = 0.45*). The water deficit reduced plant height by about 20%, leaf area by 48–81%, and total dry matter by about 60% compared with well-watered plants. The water deficit reduced flower number by 35–46% and increased seed abortion (empty pods) by 17–46%. The water deficit had no effect on the maximum seed growth rate, seed fill duration, or final seed size in any of the 3 genotypes. Therefore, the 70% reduction in seed yield induced by the water deficit was primarily due to a reduction in pod and seed numbers (by 59–70%) rather than individual seed growth rate and seed size.

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