• Title/Summary/Keyword: Genotype-environment- interactions and stability

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Genotype-Environment Interaction and Stability Analysis for Yield and Yield Contributing Characters in Soybean(Glycine max L.)

  • Islam, Mohammad Saiful;Newaz, Muhammad Ali;Islam, Md. Jahidul;Heo, Seong-Il;Wang, Myeong-Hyeon
    • Korean Journal of Plant Resources
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    • v.20 no.6
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    • pp.504-510
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    • 2007
  • GE interaction is the expression of differential genotypic adaptation across environments. GE interactions through different stability parameters and performance of the traits of genotypes were studied. The traits were days to maturity, pod length, number of pods/ plant, 100-seed weight and seed yield/plant in ten soybean genotypes across five environments. Significant differences were observed for genotypes, environments and GE interactions. Stability analysis after Eberhart and Russell's model suggested that the genotypes used in this study were all more or less responsive to environmental changes. Most of the genotypes perform better in Env.3. Based on phenotypic indices(Pi), regression ($S^2di$) genotype Garurab was found fairly stable for days to maturity. BS-23 and G-2120 may be considered as stable genotype for pod length. All the genotypes except G-2120 showed that the genotypes were relatively unstable under environmental fluctuation for the number of pod/plant. Genotype BS-23 was found most stable among all the genotypes for 100-seed weight. BS-3 and Gaurab was the most stable and desirable genotypes for seed yield in soybean.

Stability Analysis for Grain Yield of Lowland Rice for the Largest Rice-Growing Region of Eastern india

  • Bose, L.K.;Mohanty, A.;Kar, M.K.;Nagaraju, M.
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.49 no.2
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    • pp.136-140
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    • 2004
  • Twenty-one lowland rice genotypes were evaluated for their stability parameters with respect to grain yield in a multi locational trial at five different sites of Eastern India viz. CRRI, Cuttack (Orissa); OUAT, Bhubaneswar (Orissa); CRS, Masodha (UP); RAU, Pusa (Bihar) and RARS, North Lakhimpur (Assam). Pooled analysis of variance reflects existence of genotype x environment interactions and contribution of both linear and nonlinear components to genotype (G) x environment (E) interactions. Through stability parameter analysis it was found that Rayda $\textrm{B}_3$, CR 778-95 and CR 661-236 were suitable for over all environments where as Sabita, OR 1334-16 and OR 1358-RGA-4 were suitable for rich environments. PSR 1209-2-3-2, CR 780-1937, Ambika, OR 877-ST-4-2 and CR 662-2211 were identified for poor environments.

Identification of Potential Crossbreeds of Mulberry Silkworm, Bombyx mori L. and Their Performance Under Tropical Stress

  • Seshagiri, SureVenkata;Naik, S. Sankar;Goel, Ajay Kumar;Raju, P.J.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.22 no.2
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    • pp.45-49
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    • 2011
  • The performance of five newly evolved cross breeds were evaluated across seasons to understand the genotype and environment interactions and their stability under fluctuating tropical environmental conditions along with control hybrids $PM{\times}CSR2$ and $APM1{\times}APS8$. The data was collected on eight economic traits namely fecundity, yield per 10,000 larvae by number, yield per 10,000 larvae by weight, survival rate, cocoon weight, cocoon shell weight, cocoon shell ratio and filament length. The data was subjected for Analysis of Variance (ANOVA) and relevant statistical methods. The performance data obtained was further subjected for multiple trait evaluation index method. The ranks were adjudicated based on the index values. The two hybrids viz., $MSO3{\times}APS45$ and $MSO1{\times}APS12$ performed well under diversified environmental conditions indicating their overall stability and superiority. These hybrids revealed highly significant (p < 0.01) improvement for the majority of the traits over the control hybrids.

Analysis of Stability for Yield and Yield Components in Cotton Varieties (목화 품종의 수량과 수량성분 형질에 대한 환경 적응 분석)

  • 박희진
    • Korean Journal of Plant Resources
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    • v.8 no.3
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    • pp.287-296
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    • 1995
  • Stability of yield and yield components in 6 cotton cultivars were evaluated using data from the regional yield trials at two sites from 1987 to 1990. Genotype-environment interactions were analyzed by the modified model of Eberhart and Russell. The results revealed that Mokpo 7, which had many effective number of bearing branches and capsule, was the most stable high yielding variety over a wide range of environmental variations. bearing branches and capsule, was the most stable high yielding variety over a wide range of environmental variations.

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Seasonal Effects on the Performance of Newly Evolved Bivoltine Hybrids of the Silkworm (Bombyx mori L.) Under Tropics

  • Rao, P.Sudhakara;Datta, R.K.;Palit, A.K.;Haque Rufaie, S.Z.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.9 no.2
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    • pp.193-198
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    • 2004
  • Seasonal effects of the newly evolved bivoltine hybrid namely CSR$_2$${\times}$SR$_{5}$, SR$_1$ ${\times}$SR$_4$ and control hybrid KA${\times}$NB$_4$D$_2$ along with their parents SR$_1$, SR$_4$, SR$_{5}$, CSR$_2$ KA and NB$_4$D$_2$ were evaluated during different seasons of the year to understand genotype and environment interactions. Data were collected on five economic importance namely, pupation rate, cocoon yield, cocoon weight, cocoon shell ratio and filament length of the lines, hybrids and the control breeds/hybrid in three different seasons i.e., Pre-Monsoon, Monsoon and post-monsoon and subjected to relevant statistical methods. Seasonal performance of CSR$_2$, SR$_1$, SR$_4$ and SR$_{5}$ revealed superiority over control breeds KA and NB$_4$D$_2$. Both the hybrids i.e., CSR$_2$${\times}$SR$_{5}$ and SR$_1$${\times}$SR$_4$ performed well under diversified environmental conditions of tropical climate in a year indicating overall stability. These hybrids revealed highly significant (P < 0.01) variations for majority of the traits studied over the control hybrid KA${\times}$NB$_4$D$_2$.$.