Climate effects on yield components as affected by genotypic responses to variable environmental conditions in upland rice systems at different altitudes

Progress in varietal improvement for increasing upland rice productivity in the tropics

“…Since the publication of that paper, there have been many reports supporting this argument in West Africa (Saito, 2014(Saito, , 2016Saito & Futakuchi, 2014;Sito, Dieng, Vandamme, et al, 2015;Saito, Vandamme, Segda, et al, 2015;Vandamme et al, 2016a;Vandamme et al, 2016b). In East and Southern Africa, good performance of upland NERICA varieties has been frequently observed in field trials and on farm (Kijima et al, 2008;Sekiya et al, 2013;Shrestha et al, 2012). The reasons for differences in performance of upland NERICA varieties between sub-regions are not well known.…”

Stability Analysis for Yield and Yield Attributing Traits in Rice (Oryza sativa L.)

“…In Karnataka, it is grown in an area of 13.26 lakh hectares with production of 3541 thousand tons and productivity of 2.67 tonnes per ha (Annon, 2016). Yield is a complex quantitative character and is greatly influenced by environmental fluctuations; hence, the selection for superior genotypes based on yield per se at a single location in a year may not be very effective (Shrestha et al, 2012). The assessment of stability of a genotype under different environments is useful for recommending cultivars for known conditions of cultivation.…”

Four-way data analysis within the linear mixed modelling framework

“…We identified a location effect (p < 0.01) and large variance components for the year and interaction between year and location, suggesting that the agro-ecological conditions in the trials were extremely varied and accounted for most of the yield variation. In our study, similar to Shrestha et al (2012), grain yield was mainly influenced by the environment. The yield of 51 winter wheat cultivars was highly influenced by environmental factors (location, year and location × year interaction).…”