Association studies for yield components and quality Traits in Basmati Rice (Oryza sativa L.)

Abstract

The present study was conducted to elucidate character association among yield components and quality parameters utilizing the data recorded on thirty rice genotypes for twenty-two characters. Correlation analysis revealed that grain yield showed significant and positive correlation with tiller per meter, water absorb by 10g kernel, kernel breadth after cooking and breadth increase ratio after cooking. It showed significant and negative correlation with 100 grain weight, 100 kernel weight and plant height. Grain weight per panicle showed significant positive correlation with, 100 grain weight and 100 kernel weight. 100 grain weight showed highly significant and positive correlation with 100 kernel weight, kernel length before cooking and kernel breadth before cooking. kernel length after cooking, L:B. ratio and 100 kernel weight after cooking, while it showed highly significant and negative correlation with kernel elongation ratio and water absorb by 10g kernel. Therefore, we observed that morphological traits reflected positive as well as negative association with quality parameters, hence, careful selection required in enhancing characters that are negatively associated.

Study on genetic variability and heritability in rice landraces (Oryza sativa. L.) under sodicity

“…High PCV and GCV was expressed by the traits such as Na + /K + ratio (59.33%, 57.66%), grain yield per plant (31.11%, 30.54%), number of grains per panicle (28.59%, 28.54%), number of productive tillers per plant (23.75%, 22.99%) and 1000 grain weight (23.20%, 23.07%). Similar findings were reported by Dhakal et al, (2020) for number of productive tillers per plant, Kumar et al, (2020) for number of grains per panicle and Devi et al, (2020) for 1000 grain weight and grain yield per plant and Keerthana et al, (2019) for Na + /K + ratio.…”

In-vitro Screening of EMS and Sodium Azide Induced Mutant Population at Seedling Stage for Drought Tolerance in Wheat (Triticum aestivum L.)

“…By 2050, global population is expected to reach 10 billion, which would require double of current global food production [2]. Global climate change affects a variety of factors associated with water stress and extreme drought land area is likely to increase from 1to 35% by year 2100 [3]. Bread wheat, being a rabi season crop is exposed to a number of environmental stresses namely, drought, cold, salinity and heat stress among which drought stress is major contributor to crop losses.…”