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作 者:朱庆松 陈娟娟 王娜娜 李亮杰 董向向 龚守富 ZHU Qingsong;CHEN Juanjuan;WANG Nana;LI Liangjie;DONG Xiangxiang;GONG Shoufu(School of Horticulture,Xinyang Agriculture and Forestry University,Xinyang,Henan 464000)
出 处:《北方园艺》2024年第13期35-41,共7页Northern Horticulture
基 金:河南省高等学校重点科研计划资助项目(24B210011);信阳农林学院青年教师科研基金资助项目(QN2021049,QN2021048)。
摘 要:以十倍体草莓“桃熏”和八倍体草莓“红颜”为试材,采用正反交杂交育种试验方法,研究了杂交后代的植物学性状和果实品质,以期为开展草莓十倍体与八倍体杂交育种提供参考依据。结果表明:“红颜×桃熏”的杂交结实率为42.86%,高于“桃熏×红颜”15.71%,出苗率分别为36.72%和12.94%,“桃熏×红颜”的杂交后代长势较弱,最终均死亡。“红颜×桃熏”的杂交后代在叶、花等植物学性状方面不同于亲本,其中大部分介于双亲之间,但是果实大小大部分低于双亲。杂交后代的果形分布广泛,包含畸形、卵形、圆球形、圆锥形、短圆锥形、长圆锥形、楔形、带果颈形等,大部分为畸形。果实性状中变异幅度最大的是单果质量,变异系数为56.70%。获得5株果实较多且无畸形果的单株,‘HT235’‘HT245’‘HT277’‘HT300’‘HT302’,有桃香味,具有较高利用价值;‘HT110’和‘HT325’果实有浓郁桃香味,果大,为优系白果草莓,可作为白果草莓新品种培育的中间材料。Decaploid strawberry‘Tokun'and octoploid‘Benihoppe'were used as parents to cross to improve their fruit quality,the morphology and fruit quality of the hybrids were studied,in order to provide reference for the cross breeding of the decaploid and octoploid strawberry.The results showed that the fruit setting rates of‘Benihoppe×Tokun'and‘Tokun×Benihoppe'were 42.86%and 15.71%respectively,and the germination rates were 36.72%and 12.94%respectively,the seedlings of‘Tokun×Benihoppe'were died ultimately.The botanical traits of the hybrid offspring were different from parents and most of them were mostly between their parents,such as leaves and flowers,but the fruit size was mostly lower than that of both parents.The fruit shapes were segregated in their hybrid offspring with deformities,oval,spherical,flat spherical,conical,long conical and short conical,most of which were abnormal.The biggest variation in fruit traits was single fruit weight,with the variance coefficient of 56.70%.The hybrids‘HT235'‘HT245'‘HT277'‘HT300'and‘HT302'had many fruits and no deformed fruits,which had high utilization value.‘HT110'and‘HT325'with strong fruit aromas and big fruits could be used as intermediate materials for the cultivation of new varieties of white-fruit strawberry cultivars.
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