scholarly journals Genetic Diversity, Character association and Path-Coefficient study in QPM inbreds

2016 ◽  
Vol 7 (3) ◽  
pp. 505
Author(s):  
T.K. Mishra ◽  
B. Pradhan ◽  
D. Mishra
Author(s):  
H.M. Sowmya ◽  
Shashikala S. Kolakar ◽  
D. Lakshmana ◽  
Sadashiv Nadukeri ◽  
V. Srinivasa ◽  
...  

2019 ◽  
Vol 19 (1) ◽  
pp. 140
Author(s):  
Arun Kumar ◽  
Mukesh Kumar ◽  
V. Rakesh Sharma ◽  
Manoj Kumar Singh ◽  
B. Singh ◽  
...  

Author(s):  
Keshav K. Gautam ◽  
M. M. Syamal ◽  
A. K. Singh ◽  
Nakul Gupta

Genetic variability, character association and path coefficient studies were carried out for yield and yield contributing characters for twenty-four diverse genotype of pea. The results revealed a wide range of phenotypic variation, along with high heritability in pea. Highest pod yield per plant was recorded in VRP-229 followed by VRP-372 and VRP-305. The characters namely, plant height and weight of seeds per pod showed high magnitude, while number of pods per plant, number of branches per plant and pod yield per plant showed moderate magnitude for phenotypic and genotypic coefficient of variation. The heritability and genetic advance were high for days to first pod initiation, plant height and pod yield per plant indicating its additive gene action for their expression. Character association studies revealed that pod yield per plant exhibit positive and highly significant correlation with number of pods per plant, number of branches per plant and days to fifty percent flowering. The path coefficient studies also revealed that maximum positive direct effect was observed through number of pods per plant followed by days to first flowering, single pod weight and pod length towards yield indicated that these characters may be considered as the most reliable selection indices while making selection for high yielding genotypes.


2015 ◽  
Vol 40 (2) ◽  
pp. 305-323
Author(s):  
S Naznin ◽  
MA Kawochar ◽  
S Sultana ◽  
MSR Bhuiyan

Thirty three genotypes of Brassica rapa L. were evaluated in order to find out their inter-genotypic variability; character association and path coefficient of seed yield/plant and its component characters. BARI sarisha-6 x TORI-7 S-45 showed best result in terms of early maturity (75 days) and higher seed yield/plant (5.28g) than check varieties. The character, plant height, was highly influenced by the environment whereas, all other characters influenced the least. Number of secondary branches/plant showed the highest phenotypic and genotypic coefficient of variation. Moreover, number of siliquae/plant, number of secondary branches/plant and number of primary branches/plant showed high heritability (93.16%, 75.69% and 68.03%, respectively) couple with high genetic advance in percent of mean (37.74%, 73.55% and 26.82%, successively). The seed yield/plant showed significant positive correlation with number of siliquae/plant (rg = 0.7011**, rp = 0.5684**), number of primary branches/plant (rg = 0.5611**, rp = 0.4016*) and number of secondary branches/plant (rg = 0.5160**, rp = 0.4098*) revealing that selection based on these traits would be judicious. Path analysis showed that the number of siliquae/plant (0.4679), number of primary branches/plant (0.2823) and number of secondary branches/plant (0.0092) were the most important contributors to seed yield/plant. The results indicated that number of siliquae/plant, number of primary branches/plant and number of secondary branches/plant can be used as selection criteria to increase seed yield/plant in rapeseed.Bangladesh J. Agril. Res. 40(2): 305-323 June 2015


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