小麦分蘖叶、穗的生育特征与成穗的关系

对冬小麦品种农林61号的观察结果表明，分蘖能否成穗不仅与相对于母茎的出叶速度、幼穗分化速度有关，还与分蘖本身器官之间的生长关系有关。在拔节开始后不久，无效分蘖的出叶速度和幼穗分化速度就明显落后于有效分蘖。与同叶龄的有效分蘖相比，无效分蘖不仅伸长幼叶的叶片长度小，而且伸长幼叶对展开叶的长度比也小。虽然幼穗分化速度在同叶龄的有效分蘖和无效分蘖之间无明显差异，但在同一幼穗发育阶段的幼穗长度无效分蘖要小于有效分蘖。这些结果说明，无效分蘖不仅生长速度慢，而且有不同于有效分蘖的生长方式。

Leaf-Blade Growth and Ear Development of Tillers and Their Survivals in Wheat Plants

Observations on the growth and deveoopment of tillers of winter wheat (Triticum aestivum L.)plants ,cv .Norin 61suggested that the tiller surivial was not only related to the developmental rates of tillers ,but also the developmental relationships between the organs of tillers ,Not long after stem elongation stage,the tillers which would be mortal showed lower rates of leaf emergence and ear differentiation as compared with tee tillers survived .Then the results compared with the survived tillers at same leaf numbers showed that the younger leaves in morthal tllers had a lower enolngation rate,ashorter length ,and a lwer ratio to the length of mature leaves.Although the mortal tillers and the surtern than that in surveied ones.These results showed that the mortal tillers had a delopmental pattern which is different from survived tillers ,and also had a lower growth rate.