G × E Interaction and path analysis for yield and its attributing traits in advanced genotypes of pigeonpea [Cajanus cajan (L.) Millsp.]
Journal Title: Journal of Applied and Natural Science - Year 2016, Vol 8, Issue 2
Abstract
The present investigation was carried out during kharif-2012, 2013 and 2014 under rain fed condition at the Agricultural Research Station, Kalaburagi located in north eastern dry zone (Zone 2) of Karnataka, to know the stability and path analysis of the twenty genotypes of pigeonpea including check WRP-1. Highly significant differences among genotypes were observed for all the characters except primary branches. Environmental + (Genotype × Environment) interaction was significant for days to maturity, primary branch, pod bearing length, and seed yield per plant. The variance due to pooled deviation was highly significant for all the characters except for primary branches, pod length and number of seeds per pod which reflect the presence of sufficient genetic variability in the material. Out of 20 genotypes studied, RVK-275 (X=38.713, bi=1.7 and S2di = -9.67) and AKT-9913 (X =43.397, bi=2.86 and S2di= -7.42) were found to be a stable for seed yield and test weight, across the environments with good stability under rain fed conditions compared to local check. Path analysis revealed that days to flower initiation (3.942 and 1.123), days to maturity (1.493 and 0.960), primary branches (0.667 and 0.045), pod bearing length (1.153 and 0.394), number of pods per plant (0.661 and 0.463) and 100 seed weight (0.352 and 0.426) had the highest positive direct effect on grain yield both at genotypic and phenotypic level. For maximizing the grain yield per plant emphasis should be given in selection of such characters for further improvement in pigeonpea.
Authors and Affiliations
Ramesh Ramesh, S. Muniswamy, Yamanura Yamanura, Bharathi Bharathi
Cultural and morphological studies on Ponnampet leaf and neck blast isolates of Magnaporthe grisea (Herbert) barr on rice (Oryza sativa L.)
The study was carried out to standardize the optimal growth, sporulation and production of perfect stage of pathogen on different media. Among different media used such as Potato dextrose Agar (PDA), Oat meal Agar, Ragi...
Assessment of the genetic diversity among oily spot (Xanthomonas axonopodis pv. punicae) pathogen of pomegranate by randomly amplified polymorphic DNA analysis
Pomegranate (Punica granatum L.) is an important fruit crop of India and other subtropical countries. Bacterial blight caused by Xanthomonas axonopodis pv. Punicae is becoming a major threat in Maharashtra as well as oth...
Factors affecting people’s participation in joint forest management programmes in Kinnaur district of Himachal Pradesh, India
he present investigation examined the various factors affecting people's participation in the planning, implementation and maintenance of JFM programmes in the tribal distrct (Kinnaur) of Himachal Pradesh. In total, 10 f...
Effect of seed enhancement treatment on field performance of chickpea (Cicer arietinum L.)
Chickpea (Cicer arietinum L.) is an important winter season pulse crop in India grown in drought prone semi-arid and tropical regions. The aim of present investigation was to find out the effect of seed enhancement treat...
Correlation and path analysis between yield and different morphological characters in Kinnow Mandarin (C. Noballis × C. Deliciosa)
A study of interrelationship and cause-effect analysis of yield of Kinnow Mandarin (C. Noballis × C. deliciosa) and its component traits for 104 and 96 trees from Indora (Location L-1) and Indpur (Location L-2) blocks of...