【作者】 王雷； 王鸣； 石英； 田淑萍； 余庆辉；

【Author】 Wang Lei, Wang Ming, Shi Ying, Tian Shuping, and Yu Qinghui (Xinjiang Agricultural Academy, Horticultural Institute, Urumqi 830000; Northwest Agricultural University, Yanglin 712100)

【机构】 新疆农业科学院园艺所； 西北农业大学；

【摘要】 以5个加工番茄品种:加州6号、加州3号、加州613、478和奇23为亲本,用Griffing完全双列杂交第一种方法(C=p2)设计,研究了加工番茄8个数量性状的配合力、遗传效应及性状间的相关。结果表明:所研究8个性状的一般配合力和特殊配合力方差均达到极显著水平,其中单株产量、可溶性固形物的特殊配合力方差大于一般配合力方差,说明这两个性状的遗传主要受非加性效应控制,不能固定遗传,宜通过杂交优势的方法利用;果实纵径、果实横径、果形指数、果肉厚、单株结果数、单果重等性状一般配合力方差分量大于特殊配合力方差分量,说明这些性状以基因加性效应占主导地位,可以固定遗传,杂交后代应采取系谱法选育固定。加工番茄性状间的相关分析表明,单株果数是最重要的产量组成性状;可溶性固形物与果肉厚度有密切的相关(r=0．8598)。更多还原

【Abstract】 A dialled crosses among 5 processing tomato cultivars using complete dialled design of Griffing’s method Ⅰ (C= P2)were made. Traits were studied on fruit width, fruit length, fruit index, fruit flesh thickness, per fruit weight, fruit number per plant, per plant yield and soluble solid. Genetic parameters of 8 traits such as combining ability, heritability and correlation were analysed. The results from the variance analysis of combining ability indicated that general combining ability (gca) and specific combining ability (sea) were highly significant for all analysed traits. A preponderance of variance due to SGA over GCA was observed for per plant yield and soluble solid indicating the main role of non-additive gene action in the expression of these two characters. Heredity of these traits can’t fixed and the utilization of these characters may use heterosis method. A preponderance of variance due to GCA over SGA was observed for fruit width, fruit length, fruit index, fruit flesh thickness, per fruit weight and fruit number per plant indicating that the additive gene action play the main role in these characters for which the ultilization of these characters may use hybridization breeding method. Correlation analysis between processing tomato traits manifested that per plant fruit number was the main component of the yiled. Soluble solid was significantly correlated with fruit flesh thickness (r = 0.8598).更多还原