[Show abstract][Hide abstract] ABSTRACT: To evaluate 110 clones against standard variety CP77-400 a non replicated double row trial was laid out having net plot size measuring 5X2.4m Keeping in view the desirable characters, 42 clones having desir-able birx % growth and other quantitative characters were selected and were promoted to preliminary varietal trial while 68 clones were rejected due to undesirable characters, However 5.45%, 10.90%, 9.09%, 3.63%, 8.18% 4.54% and 2.72 clones were rejected, due to poor growth, pithiness, low brix %age, aerial roots, cracks sprouts disease susceptibility, insect/pest infestation, hairiness lodging and short needed length respectively.
[Show abstract][Hide abstract] ABSTRACT: Comparative performance of 251 clones against standard variety CP77-400 was conducted in a non-rep-licated trial, having net plot size measuring 2.4 x 5 m. Keeping in view the desirable characters, 133 clones were selected and promoted to preliminary varietal trial while 47% clones were rejected due to un-desirable characters. In general 2.39%, 5.58%, 11.15%, 4.78%, 2.78%, 5.58%, 5.18%, 2.79% and 6.77% clones were rejected because of poor growth, pithiness, low brix, aerial roots, cracks, sprouts, disease sus-ceptibility, insect pest infestation and lodging, respectively.
[Show abstract][Hide abstract] ABSTRACT: The objective of this investigation was to evaluate seed yield of twenty durum wheat (Triticum turgidum spp. durum) genotypes. Evaluation of genotype × environment interaction and stability were also carried out at five diverse locations during the 2007-2009 growing seasons. Significant differences were found among the genotypes for seed yield on individual years and combined over years, in all locations. Genotype × environment interaction showed significance (p>0.001) for seed yield. According to the coefficients of linear regression and deviations from the regression model, genotypes G2, G7 and G8 proved to be the most stable while based on α and λ parameters, genotypes G7, G12 and G13 were identified the most stable. Clustering genotypes based on all stability methods and mean yield divided them into four major classes, which Class II had relatively high stability and high mean yield performance. To compare relationships among stability statistics, hierarchical clustering procedure showed that the ten stability statistics and mean yield could be categorized into three major groups, which methods of Group C indicated dynamic concept of yield stability. The genotypic stability, stability variance, superiority index and desirability index provide information for reaching definitive conclusions. Also, the best recommended genotypes, according to the present investigation, were G2 (2697.18 kg ha -1), G7 (2644.70 kg ha -1), G8 (2580.16 kg ha -1) and G10 (2637.43 kg ha -1), which had high mean yield and were the most stable genotypes based on the above mentioned stability statistics.
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