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首页> 外文期刊>African Journal of Biotechnology >Grain yield and its components study and their association with normalized difference vegetation index (NDVI) under terminal water deficit and well-irrigated conditions in wheat (Triticum durum Desf. and Triticum aestivum L.)
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Grain yield and its components study and their association with normalized difference vegetation index (NDVI) under terminal water deficit and well-irrigated conditions in wheat (Triticum durum Desf. and Triticum aestivum L.)

机译：水分亏缺和灌溉条件良好的小麦（Triticum durum Derum和Atriticum aestivum L.）的籽粒产量及其组成成分及其与归一化植被指数（NDVI）的关系

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Six genotype of Triticum aestivum L. in 1991 and one genotype of Triticum durum Desf. and three of T. aestivum L. in 1992 were studied under different water regimes: full irrigation (R1), mild water stress (R3) and severe water stress (R2) at Magneraud (France). Traits evaluated were grain yield and its components, stress susceptibility index (SSI) and normalized difference vegetation index (NDVI). The analysis of variance revealed significant differences between regimes and among the cultivars for all traits except between regimes for thousand grains weight in 1991. The regime × variety interaction was significant for grain yield, thousand grains weight and NDVI in 1992 and for grain yield in 1991. For all traits, durum wheat (T. durum Desf.) has higher reduction in the two water stress than the common wheat (T. aestivum L.). Correlations studies revealed that grain yield, grains number/m2, thousand grains weight and NDVI were associated with each other except for correlations between thousand grains weight on one hand and grain yield (1992) and grains number/m2 (1991) on the other hand. 51.55, 27.88, 4.12% (1991) and 75, 43 and 20.2% (1992) of grain yield, grains/m2 and thousand grains weight variability, respectively were explained by means NDVI variability. The grain yield and grains number/m2 could be predicted using a single regression with NDVI.
机译：1991年普通小麦的6种基因型和硬粒小麦的一种基因型。和1992年的三株普通小麦在不同的水分状况下进行了研究：法国马格纳罗（Manneraud）的完全灌溉（R1），轻度水分胁迫（R3）和重度水分胁迫（R2）。评估的性状包括谷物产量及其组成，胁迫敏感性指数（SSI）和归一化植被指数（NDVI）。方差分析显示，除1991年千粒重的制度外，所有性状的制度之间和品种之间存在显着差异。制度×品种相互作用对1992年和1991年的谷物产量，千粒重和NDVI均具有显着影响对于所有性状，硬粒小麦（T. durum Desf。）在两种水分胁迫下的减少均高于普通小麦（T. aestivum L.）。相关性研究表明，谷物产量，籽粒数/ m2，千粒重和NDVI相互关联，除了一方面千粒重与谷物产量（1992）和粒数/ m2（1991）之间的相关性。 。分别通过NDVI变异性解释了51.55％，27.88％，4.12％（1991年）和75％，43％和20.2％（1992年）的粮食单产，每平方米谷物和千粒重的重量变化。可以使用NDVI进行单次回归来预测籽粒产量和籽粒数/ m2。

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