scholarly journals Genetic variability, correlation and path analysis studies for yield and yield attributes in African rice (Oryza glaberrima) germplasm

2020 ◽  
Vol 11 (02) ◽  
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Oryza Glaberrima ◽  
Yield Attributes ◽  
African Rice ◽  
Correlation And Path Analysis

Genetic variability, principal component and cluster analyses in black gram under Foot-hills conditions of Manipur

2018 ◽  
Author(s):  
M. Samuel Jeberson ◽  
K. S. Shashidhar ◽  
Amit Kumar Singh
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Quantitative Traits ◽  
Principal Component ◽  
Yield Attributes ◽  
Eigen Values ◽  
Correlation And Path Analysis ◽  
And Cluster Analysis ◽  
100 Seed Weight ◽  
Selection Of

Analysis of genetic variability, heritability, correlation, path analysis, principal component and cluster analysis was carried for 25 blackgram genotypes grown in the foothills of Manipur. The results showed that phenotypic coefficients of variability recorded were higher than the genotypic coefficients of variability, irrespective of traits, demonstrating the effect of environment thereon. The present study revealed that the heritability (bs) estimates were maximum (>50%) for the traits such as days taken to attain the 50% flowering, number of clusters/plant, number of pods/plant and 100 seed weight. The correlation and path analysis proved the selection of the yield attributes in blackgram based on the characters, viz., number of pods/plant and number of cluster/plants. The first three principal components, having the Eigen values more than 1, contributed 84.52% towards variability among the 25 genotypes screened for quantitative traits. Based on the average linkage, 25 genotypes were grouped into five (5) clusters.

scholarly journals Studies on genetic variability, correlation and path analysis in lettuce (Lactuca sativa L.) under protected conditions

2016 ◽  
Vol 8 (4) ◽  
pp. 1924-1930 ◽  
Author(s):  
Manisha Thakur ◽  
Ramesh Kumar ◽  
Sandeep Kumar
Keyword(s):  
Seed Germination ◽  
Genetic Variability ◽  
Path Analysis ◽  
Direct Effect ◽  
Western Himalayas ◽  
Sclerotinia Rot ◽  
Head Weight ◽  
Gray Mould ◽  
Correlation And Path Analysis ◽  
Positive Direct

Twenty-eight genotypes of lettuce including check cultivars viz., Simpson Black Seeded and Great Lakes were grown in a RCBD with three replications during Rabi 2011-12 and 2012-13 at Vegetable Experimental Research Farm, Nauni, Solan H.P. to estimate the parameters of genetic variability, correlation and path analysis undernaturally ventilated polyhouse. Analysis of variance showed highly significant differences among genotypes for all the characters under study. Variability revealed that phenotypic co-efficient of variation (PCV) in general were higher than the corresponding genotypic co-efficient of variation (GCV) for all the characters. High co-efficient of variability were found for heading percentage (37.00% and 36.01%), incidence of sclerotinia rot (63.49% and 61.475%), gray mould (90.13% and 88.08%) and yield per plot (39.55% and 33.09%) indicated wider range of variation and offer better scope for improvement through selection. High heritability estimates coupled with moderate genetic gain were observed for yield and other horticultural traits. Correlation study indicated that yield per plot was positively correlated with gross and net head weight, seed germination, seed vigour index-I & II, 1000-seeds weight and also showed maximum direct effects towards yield per plot. The path co-efficient analysis revealed that net head weight has maximum positive direct effect on yield per plot followed by gross head weight, days to marketable maturity, seed germination, 1000-seeds weight, head shape index and incidence of sclerotinia rot. While, negative direct effect of number of non-wrapper leaves and incidence of gray mould was observed on yield. The new multicoloured cultivars indigenous and exotic mostly procured from CGN, Netherlands , identified for commercial cultivation under protected conditions in the mid hills of North Western Himalayas, may act as a substitute to the old cultivars with good quality and higher yielding potential.

Genetic Variability, Correlation and Path Analysis in Mungbean

2003 ◽  
Vol 2 (17) ◽  
pp. 1209-1211 ◽  
Author(s):  
Md. Motiar Roh ◽  
A.S.M. Iqbal Hussain . ◽  
Md. Saykhul Arifin . ◽  
Zerin Akhter . ◽  
Mirza Hasanuzzaman .
Keyword(s):  
Genetic Variability ◽  
Path Analysis ◽  
Correlation And Path Analysis
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