山东省小麦品种性状演变的回顾与展望

本文以山东省建国以来不同时期有代表性的小麦品种为试材,从产量及其构成因素、形态性状、生理性状、抗病性、生育期等不同角度,对30多个性状进行了研究和分析,探讨了主要性状的演变规律。估计了遗传方差、遗传变异系数、遗传力、遗传进度等重要遗传参数。用GM(1,1)模型对90年代主要性状的发展趋势进行了灰色预测,对今后小麦性状改良潜力、育种的主攻目标、理想株型育种、高光效生理育种等重要问题进行了讨论。

LOOK BACK AND FORWARD TO CHARACTER EVOLUTION OF WHEAT CULTIVARS GROWN IN SHANDONG PROVINCE

Thirty more character Parameters of representative wheat cultivars grown in Shandong Province during different Periods since 1949 are studied and analyzed from angles of yield and its components, morphologic and physiologic traits, disease resistance, and duration of growth and development,etc,and the evolution reguarity of the main characters is discussed. At the same time, some main genetic Parameters, such as δ_B~2,GCV,h_B~2,GS, GS',are estimated. The grey Prediction of developmental trends of main characters in 1990s is Performed according to GM(1,1) model followed by discussion about some important problems, for example, improvement potential of characters, main breeding objectives, ideotype breeding, high photosynthetic rate breeding, and so on.