Yield Stability of Pearl Millet Genotypes Under Irrigation with Different Salinity Levels
Yield Stability of Pearl Millet Genotypes Under Irrigation with Different Salinity Levels
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不同盐度灌溉下珍珠粟基因型的产量稳定性
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Abdel Qader Al
中科院分区：
文献类型：
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作者：
A. Dakheel;G. Shabbir;Abdel Qader Al
16个珍珠粟基因型进行了评价灌溉与三个水平的边际质量（盐水）。计算了鲜物质和干物质产量、株高和绿叶度的稳定性参数。合并方差分析显示基因型和环境之间的显着差异。环境（线性）对所有性状的影响均达到极显著水平。这表明，环境是相当大的差异，并发挥了显着的作用，这些性状的表达。所有性状的G × E（线性）和合并偏差均不显著。稳定性参数bi和Sdi的大小不显着，但基因型之间的变化。因此，可以用平均产量和稳定性参数的比较值来预测基因型的稳定性。IP6106（B2）、IP13150、HHVBC Tall（B2）、ICMV 7704（B1）、MC94C2（B2）、ERaj pop和ICMV 155 Brist（B10）的绿色产量、干物质产量和叶重产量均在平均水平以上，但bi值大于1，表明它们在低盐和中盐条件下表现较好。IP6106（B2）是最稳定的基因型，具有最高的鲜干物质产量，bi值接近1，Sdi较小。IP19586和Dauro基因库（B2）的干物质产量低于平均水平，bi值显著小于1，表明产量因高盐而降低。本模型不适用于IP6109、Nutrifeed和ICMV155Brist（B10）来解释多叶性的变异，因为这些基因型的该性状的R值非常低。
Sixteen pearl millet genotypes were evaluated under irrigation with three levels of marginal quality (saline) water. Stability parameters were computed for fresh and dry matter yield, plant height and leafiness. Pooled analysis of variance revealed significant mean differences among genotypes and environments. Environment (Linear) was highly significant for all the traits. It showed that the environments were considerably different and played a significant role in the expression of these traits. The G x E (Linear) and pooled deviation were non-significant for all the traits. The magnitude of stability parameters bi and Sdi were non-significant but variable among genotypes. Therefore, stability of the genotypes was predicted on mean yield and comparative value of stability parameters. The genotypes IP6106(B2), IP13150, HHVBC Tall(B2), ICMV 7704(B1), MC94C2(B2), ERaj pop, and ICMV155Brist(B10) had the above average yield of green and dry matter and leafiness but bi values greater than 1 showing their performance was better under low and medium salinity levels. IP6106(B2) was the most stable genotype with highest fresh and dry matter yield with bi values close to unity and small Sdi. IP19586 and Dauro gene pool(B2) had below average dry matter yields and bi value significantly less than unity, showing that yield was reduced due to high salinity. The present model was not fit for IP6109, Nutrifeed and ICMV155Brist (B10) to explain variation for leafiness as the R values for these genotypes were very low for this trait.