岑溪软枝油茶全同胞家系遗传变异分析-《西北林学院学报》

文章信息/Info

Title:: Genetic Variation Analysis on Full-sib Families of Cenxi Soft-branch Camellia oleifera

Author(s):: WANG Dong-xue; ZENG Wen-jun; JIANG Ze-peng; ZHANG Nai-yan^*; (Guangxi Forestry Research Institute,Improved Variety and Cultivation Engineering Research Center of Oil-tea Camellia in Guangxi,Nanning,Guangxi 530002,China)

Keywords:: Cenxi soft-branch Camellia oleifera; full-sub family; genetic variation

摘要:: 以岑溪软枝油茶全同胞家系子代测试林为研究对象，进行果实经济性状遗传变异分析，结果表明：岑溪软枝油茶全同胞家系子代果实性状变异比较丰富，尤其是单果重、鲜籽数和单粒籽重3个指标，其变异系数分别为24.58%、33.14%和35.15%，为选择果大、籽粒重的油茶优良品系提供了物质基础；全同胞家系子代的单果鲜籽数和单粒籽重在各家系间均存在极显著差异，单果重和鲜出籽率在各家系间差异显著；单果重、单果鲜籽数、单粒籽重和鲜出籽率等4个主要性状指标具有较高的遗传强度，其家系遗传力都在0.50以上。分析岑溪软枝油茶同胞优良家系的遗传变异，对下一步岑溪软枝油茶优良单株的评选以及高世代改良都具有重要意义。

Abstract:: Genetic variations of fruit economic characters of full-families of Cenxi soft-branch Camellia oleifera were examined.The results showed that fruit character variations of Cenxi soft-branch C.oleifera were relatively abundant,especially fresh fruit weight,seed number and single seed weight,and the corresponding variance coefficients were 24.58%,33.14% and 35.15%,respectively.It provided the material basis for the selection of fine strains with big fruit and heavy grain weight.There were significant differences among full-sib families in seed number and single seed weight.The fresh fruit weight and fresh seed rate had remarkable differences among families.The genetic strength of fresh fruit weight,seed number,single seed weight and fresh seed rate were high,and the family heritability was more than 0.50.The results had important significance for superior individual selection and high generation improvement.