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Genotype X Environment interactions, AMMI and biplot analysis of basmati rice (Oryza sativa L.) genotypes in different production systems

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Title Genotype X Environment interactions, AMMI and biplot analysis of basmati rice (Oryza sativa L.) genotypes in different production systems
 
Creator Jain, Bharat Taindu
 
Contributor Sarial, A.K.
 
Subject genotypes, rice, environment, developmental stages, yields, sowing, grain, drying, planting, productivity
 
Description In Green revolutions states due to yield stagnation & over exploitation of water resources, Governemnt of India is
prioritizing crop diversification replacing rice with alternate crops.Substituting rice with basmati and cultivation
through resource conservation techniques has been advocated as one of the alternatives. The G X E interaction and
AMMI biplot analysis was thus carried out to identify Basmati rice genotypes for non-conventional resource
conserving techniques. A set of 22 basmati rice genotypes comprising released varieties and elite lines including
an hybrid was evaluated under four production systems viz,convenyional TPR and non-conventional SRI, DSR
(wet) and DSR (dry). The experiment was conducted during Kharif 2014 season in RBD with three replications at
experimental farm of CCSHAU, College of Agriculture, Kaul.The plot size was 2 m2. Under DSR (dry seeding)
the seeds were sown into prepared seed bed on dry soil surface while pre-germinated seeds after priming for 24
hours were dibbled in puddled soil surface (wet seeding). The analysis of variance revealed that genotypes were
significant for all the fifteen characters studied except biological yield per plant in DSR (wet).
In general, genotypes responded differentially for various traits under different production systems.
Ninteen of the 22 genotypes recorded higher grain yield per plant in SRI. Pusa basmati 1121 yielded 44% higher
over TPR. Hybrid Pusa RH 10 yield was at par in TPR and DSR (wet) but it performed poorly in SRI. HKR 08-
417 with >25% increase over TPR yielded maximum in DSR (wet). Pusa Sughandha 5 and Trarori Basmati gave
the same yield in TPR and DSR (Dry). Pusa Basmati 3 yielded maximum in TPR but it suffered in remaining
three systems. Almost all genotypes flowered and matured early in TPR followed by SRI, DSR (wet) and DSR
(Dry). Pusa Basmati 1509 was the earliest in all production system. All genotypes showed increase in number of
spikelets per panicle, percent filled spiklets, panicle weight and test rain weight in SRI over other productions
systems. Hulling, milling & HRR were better in TPR & SRI. Among production systems SRI was found to be the
best followed by TPR while DSR (dry) followed by DSR (wet) poor. It was attributed due to more number of
effective tillers per plant, more panicle length, more panicle weight and high number of filled grains per panicle.
The G X E interaction was analysed following two models i) Eberhart and Russel (1966) and ii) AMMI
(1989). The mean sum of squares due to genotype x environment interaction were significant for 5 of the 15 traits
only viz; days to 50% flowering, days to 75% maturity, grain yield per plant, harvest index and test grain weight.
Partitioning of GxE component of variance showed that both linear and non-linear contributed towards
interaction in case of harvest index and significant non- linear in case of days to maturity, days to flowering, test
grain weight and grain yield per plant. AMMI Model’s first two IPCA components accounted for > 85% of G x
E interaction. Stability analysis identified genotype CSR 30 and Basmati 370 stable for days to 75% flowering
and Pusa basmati 1509, Pusa Sugnadha 5, HKR 06-443, CSR 30 and Pusa RH 10 for test grain weigh while none
for grain yield, harvest index and days to 50% flowering. Five genotypes were identified suitable for better
environment for grain yield, three each for harvest index and test grin weight, eight for days to flowring (late) and
seven for days to maturity (late).
 
Date 2016-10-18T13:40:11Z
2016-10-18T13:40:11Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/80871
 
Language en
 
Format application/pdf
 
Publisher CCSHAU