四个春小麦分蘖成穗规律的比较研究

对四个春小麦品种—川农19、川农17、绵阳11和川麦107进行田间种植研究，旨在从形态学、解剖学的角度来探讨不同生长发育时期小麦分蘖的生长发育与小麦有效成穗的内在关系。研究结果表明：在生长过程中，单棱期持续时间较长有助于小穗数增加；拔节后较长的生殖阶段可以增加子粒数；分蘖的营养生长持续时间相对较短，一级分蘖、二级分蘖生长锥之间呈一定秩序性排列，是产生更多有效分蘖的主要原因，如川农17。

The Comparison among Four Spring Wheat on Emergence and Survival of Tillers

In the study, four wheat (Triticum aestivum L.) cultivars Chuan nongl9, Chuan nong 17,Mian yang Hand Chuan mai 107, were employed to determinate the relation between growth and development of tillers and fertile tillers on different developed phases, with morphological and anatomical method. The results showed that the longer duration at single ridge stages contributed to the increase the spikelets. At stem elongation, longer duration for reproductive stages enhanced the number of grain. In all the tillered cultivars, such as Chuan nong17, a shorter vegetative duration and a well-ordered ranging between primary tillers of apical and secondary tillers of apical was the major factor that led more fertile tillers.