小麦品种单籽粒性状的研究

Single-Kernel Character of Wheat Varieties

小麦单籽粒鉴定法（ Ｓ Ｋ Ｃ Ｓ） 的发明使得对小麦品种间和品种内单籽粒性状的研究成为可能，从而为小麦育种目标性状的制定、品种鉴定及品质评价带来了新的认识和信息。通过对１３ 个小麦品种（ 品系） 单籽粒性状的研究认为，品种内单籽粒含水量存在着较大的变化；单籽粒重量的变幅较为突出，且品种内的变化大于品种间的变化；个别品种籽粒宽度的变异系数较高；关中地区的小麦品种绝大多数为硬质麦，个别品种存在着 籽粒质地不纯的现象；籽粒宽度和籽粒重量具有显著的相关性。

Development of the single-kernel characterization system (SKCS)offers a possibility to study single-kernel character within a variety and between varieties.The single-kernel characters of 13 wheat varieties and strains were tested .The water contents of single kernel within a variety were quite different.The single kernel weight was obviously more variant within a variety than between varieties.The coefficients of variation in kernel width of a few varieties were relatively high.According to the kernel hardness tested with SKCS,most wheat varieties of Guanzhong Area were classified as hard wheat only one variety,Qinmai 12,was classified as a mixture of hard and soft kernels.There was significant correlation between kernel width and kernel weight.