摘要
以延边大香水为母本,红香酥、早酥、红茄、晋酥、晋密、鄂梨1号和云红1号为父本的7个梨杂交组合F1为试材,对果实性状进行连续3年调查,总结分析果实性状遗传倾向,以期为梨遗传育种提供参考依据.结果表明:杂种F1单果重、果实横径、果实纵径、果柄长度、果柄粗度、果形指数及可溶性固形物等7个性状都有趋中遗传倾向.其中,单果重产生退化,向小果遗传趋势强;可溶性固形物和果形指数变异系数较小,遗传传递力较高;果柄粗度呈趋中偏低遗传,果柄长度、果实横径、果实纵径呈趋中偏高遗传.对不同组合果实性状遗传倾向研究认为果实底色、萼片类型、萼洼深度、质地、汁液、风味等性状受母本影响较大,为母性遗传;萼洼广度有趋中遗传倾向;果实香气受父本影响较大;果实面色可隔代遗传.以上研究结果为梨果实性状遗传规律研究及杂交育种亲本的选择选配提供参考价值.
Abstract
To provide reference for pear breeding,the genetic basis of fruit traits was investigated through three consecutive years,by taking use of F1 plants of seven hybridization combinations with Yanbiandaxiangshui as female parent,Hongxiangsu,Zaosu,Red clapp favorite,Jinsu,Jinmi,Eliyihao and Yunhongyihao as male parents.The results of F1 hybrids showed a central tendency at seven traits,including single fruit weight,fruit diameter,fruit length,stalk length,stalk thickness,fruit shape index,and soluble sugar content.The single fruit weight has a strong genetic tendency towards small fruit.The coefficient of variation at soluble solid content and fruit shape index was small,while the genetic transmissibility were high.The inheritance of stalk diameter tended to be medium to low,while the inheritance of stalk length,fruit diameter and fruit length tended to be medium to high.The traits including background color,persistency of sepals,depth of eye basin,flesh texture,juice,and flavor were greatly contributed by the maternal parent.Width of eye basin inherited tend to medium and aroma was influenced by male parents.The cover color variation was observed following the laws of intergenerational inheritance.Collectively,the results provided reference for studying the genetic laws of pear fruit traits and selecting parents for hybrid breeding.
国家科技期刊平台
NSTL
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