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采用包括基因型与环境互作的数量性状加性 显性发育遗传模型 ,研究了按双列杂交设计 {P(P +1) / 2 }配制成 1套包括亲本、F1两个世代的水稻遗传材料在不同环境条件下化感作用的动态杂种优势。结果表明 ,杂种F1和F2 在大部分叶龄时期具有抑制受体植物茎长和根长的杂种优势。F2 的化感作用潜力与F1相比有所下降 ,在不同环境条件下其群体平均优势均为F1的 1/ 2。在温度较低、光照较弱的田间环境条件下 ,水稻化感作用杂种优势较大。暗示着环境胁迫会增强化感作用的性状表现 ,解释了植物在不利环境下产生化感物质数量有所增加的遗传原因。
A quantitative trait-plus-dominance developmental genetic model including genotype-environment interaction was used to study the genetic structure of rice inherited from two generations of F1 generation, including the parents and F1, based on the double line hybrid design {P (P +1) / 2} Dynamic Heterosis of Material Allelopathy under Different Environmental Conditions. The results showed that hybrids F1 and F2 had the heterosis of inhibiting plant stem and root length in most leaf age stages. The allelopathic potential of F2 decreased compared with that of F1, and the average superiority of F2 was1 / 2of F1 under different environmental conditions. Allelopathic hybrid rice had greater heterosis in field environments with lower temperature and weaker light. Suggesting that environmental stress will enhance the allelopathic traits, explaining the genetic causes of the increased number of allelochemicals produced by plants under unfavorable conditions.