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本文通过对在晋南麦区和黄淮麦区旱地种植面积较大的小麦骨干品种12057、晋麦33号、晋麦47号主要性状的年度变异、丰稳性的遗传效应的分析,探讨了旱地小麦品种生命力衰退的原因。结果表明,三个品种的丰稳性在于其变异大的成穗数和稳定的穗粒重;品种生命力衰退的主要原因是抗逆性的丧失;并将品种的生命周期划分为优势期、品种——环境适应期和衰退期;认为任何品种都具有时空效应。
In this paper, we analyzed the genetic variation of annual variation and abundance stability of main wheat cultivars 12057, Jinmai 33 and Jinmai 47 with dry land in Jinhan and Huanghuai regions. Reasons for the decline of vitality of dryland wheat varieties. The results showed that the abundance stability of the three cultivars was due to their large variation in spikes and stable grain weight per spike. The main reason for the decline of the vitality of cultivars was the loss of resistance. The varieties were divided into dominant period, - Adaptation and decline of the environment; think of any species has a space-time effect.