Heterosis and Hereditary Effects of Total Acid in Genic Male-sterile Tomato（Lycopersicon esculentum L.）—‘Da107’
WANG Xian-yu1, 4, YU Fen-di1, CHEN Wei1, LIANG Cong-yao1, DU Yong-cheng2, ZENG Dong3
1Agronomy College, Guangxi University, Nanning 530004, Guangxi, China; 2Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China; 3Government of Guangxi Zhuang Autonomous Region, Nanning 530012, Guangxi, China; 4Guilin Comprehensive Experimental Station of National Staple Vegetable Industrial Technology Systems, Guilin 541004, Guangxi, China
Abstract：This experiment took genic male-sterile Da107 as female parent and hybridized it with 6 inbred lines（Dongsheng No.3, Niufanqie, Meilisha, 1439, 12 and A3）as male parent, and 6 new tomato（Lycopersicon esculentum L.）combinations were compound. The total acid of matured fruit combinations was determined by acid-base titration，so as to estimate heterosis, combination ability and heritability etc. The regression analysis was carried out. The results showed that among the 6 combinations, 2 had positive heterosis, 4 showed negative heterosis and 1 was over-parent heterosis. The general combining ability and special combining ability of fruit total acid were 17.18 % and 82.82 %, respectively. The broad-sense heritability and narrow-sense heritability were 57.30 %, 46.68 %, respectively. And the constant parent correlation coefficient was -0.0415, which had not reached the significant level, just expressed as negative correlation.
