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小麦无效分蘖所以影响作物产量，是因为它减小了作物的最佳有效群体。本研究旨在检验分蘖死亡率的遗传变化特性及其与不同小麦品种产量的关系。在Ｒａｍｐｕｒ、Ｎｅｐａｌ通过４年重复试验对２０个品种进行了评估。调查的性状有最大分蘖数、生殖性分蘖数、分蘖死亡率和产量。不同的供试品种表现出明显的不同性状。分蘖死亡率范围从７％～３０％。环境因素对所有４种特性有着本质的影响。对所有特性来说，逐年各项间的相互作用是显著的。这主要是由不同基因型间的变异引起的。然而，一些品种始终保持低或高的分蘖死亡率。４年中有３年的分蘖死亡率和产量存在显著负相关，最高分蘖数与生殖分蘖数、分蘖死亡率之间存在正相关，产量与最大分蘖数之间表现了一种不显著的正相关，生殖性分蘖数和作物产量之间存在正相关。这一研究结果说明了春小麦的无效分蘖对其产量有消极影响，且分蘖死亡率存在着品种间的基因差异
Invalid tillering of wheat therefore affects crop yields because it reduces the optimal effective population of the crop. The aim of this study was to examine the genetic variation of tillering mortality and its relationship with the yield of different wheat cultivars. In Rampur, Nepal, 20 species were evaluated through 4 years of repeated trials. The investigated traits include the maximum number of tillers, the number of reproductive tillers, the tillering mortality and the yield. Different test varieties showed obvious different traits. Tillering mortality ranged from 7% to 30%. Environmental factors have an essential effect on all four characteristics. The year-by-year interaction is significant for all the features. This is mainly caused by the variation between different genotypes. However, some varieties consistently maintain low or high tiller mortality rates. There was a significant negative correlation between tillering mortality and yield at four years in four years. The highest tiller number was positively correlated with reproductive tiller number and tillering mortality, and there was an insignificant positive correlation between yield and tillering number , There is a positive correlation between the number of reproductive tillers and crop yield. The results of this study showed that null tillering of spring wheat had a negative impact on the yield, and there were genetic differences among varieties in tillering mortality