Pomology Institute,Jilin Academy of Agricultural Sciences,Gongzhuling
China Agriculture Research System of MOF and MARA(CARS-28-05)
To provide reference for pear breeding, the genetic law of fruit trait was studied by using F1 generation of 7 cross combinations with ‘Yanbiandaxiangshui’ as female parent through three consecutive years. The results showed that the seven traits of F1 hybrids, including single fruit weight, fruit diameter, fruit length, stalk length, stalk thickness, fruit shape index, and soluble sugar content that all showed a central tendency. Among of them, single fruit weight has a strong genetic tendency towards small fruit; The coefficient of variation of soluble solid contents and fruit shape index was small, the genetic transmissibility and heterosis rate were highs; 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 studies suggested that background color, sepals, eye basin, flesh texture, juice, and flavor were greatly influenced by the maternal parent; The flesh texture type inherited tend to medium and greatly influenced by male parents , which was same as to aroma;Cover color could be?inherited?in?other?generation. The results provide reference value for studying the genetic laws of pear fruit traits and selecting parents for hybrid breeding.