Method for screening and breeding excellent winter wheat plants

• Main Authors: SONG JIANMIN, WANG CANGUO, ZHAO ZHENDONG, LIU JIANJUN, CHENG DUNGONG, YU XIAOCONG, GUO JUN, LI HAOSHENG, LIU AIFENG, CAO XINYOU
• Format: Patent
• Language: Chinese; English
• Published: 15.06.2016
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; FISHING; FORESTRY; HUMAN NECESSITIES; HUNTING; NEW PLANTS OR PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES; TRAPPING

The invention belongs to the field of genetic breeding, and in particular relates to a method for screening and breeding excellent winter wheat plants. Typical varieties which are popularized to be planted in a large area in a variety replacement process are selected as test materials to be planted; agronomic characters, in particular stalk characters, are investigated, to fit a curve that the stalk characters are changed along the year; correlation coefficients of the stalk characters to the yield, the biomass yield and the harvesting index are inspected to perform multiple stepwise regression and path analysis on morphological characters of stalks and search key factors for seed yield; and three key factors for the seed yield include internode length below the spike, length of the last two nodes and dry weight of the internode. 本发明属于遗传育种领域，具体涉及一种冬小麦优异株型的筛选和选育方法。选择品种更替过程中生产上大面积推广种植的个典型品种为试验材料种植，调查农艺性状，特别是茎秆特征，拟合茎秆特征随着年代的变化趋势的曲线，考察茎秆特征和和产量、生物学产量、收获指数相关系数，对茎秆形态特征进行多元逐步回归和通径分析，寻找影响籽粒产量关键因素，影响籽粒产量的三个关键因素为穗下节长度、倒