摘要
Hardness genetic laws of pink hard-fruit tomato were studied for breeding new varieties of pink hard-fruit tomato. The change of hardness degree and heredi- tary characters of tomato were studied using the texture analyzer, with female parents P27, male parents P31 and tomato F1 combination 15# as the test materials. The result showed that transverse hardness was the lowest, followed by longitudinal hardness, and the hardness of fruit shoulder was the highest. The average hardness at green fruit stage was higher, the hardness at turning-color period and red ripe stage decreased significantly. The average hardness of P27, P31, F1 combination 15# at red ripe fruit was 13.27, 10.88, 12.28 N, respectively. The hardness at red fruit stage and green fruit stage had significantly positive correlation. Fruit shape index of F1 combinations 15#at red ripe stage was 0.87. The fruit shape was round with 5-6 locules. The pericarp thickness was 0.7-0.8 cm. The single fruit weight was 258 g. It was the ideal bred variety for pink hard-tomato fruit. There was no necessary connection among fruit hardness and fruit size, pericarp thickness, ventricle numbers, single fruit weight. Fruit shape index could be used as indirect selection index of the hardness of tomato.
为了选育硬粉果型番茄新品种,研究硬粉果番茄硬度遗传规律问题,选取硬粉果骨干亲本材料母本P27、父本P31及配置的F_1组合15#为试材,利用质构仪研究果实硬度变化及遗传特性。结果表明,同一果实横向硬度最低,纵向硬度次之,果肩硬度最高。中青果期果实的平均硬度较高,转色期和红熟期硬度下降明显加快;P27、P31、F_1组合15#红熟果平均硬度分别为13.27、10.88、12.28 N;红果期与青果期果实硬度极显著正相关;F_1组合15#红熟果的果形指数为0.87,果实圆形,果皮厚度0.7~0.8 cm,5~6个心室,单果重258 g,是硬粉果番茄选育的理想品种。番茄果实硬度与果实大小、果皮厚度、心室数、单果重没有必然的联系,果形指数可作为番茄硬度的间接选择指标。
基金
Supported by the Science and Technology Supporting Program of Hebei Province in2006-2010
the Supporting Program of Hebei Province in 2011-2013
the Special Financial Fund of Hebei Province in 2012-2014(06220116D-4&11220102D-4)~~
