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(一)“丰收红”的绿茎性状有什么用途? “丰收红”西红柿,表现中熟、丰产、抗病、耐热。这个品种分紫茎和绿茎两种类型。绿茎“丰收红”,即使处在低温条件下,也不形成花青色素,其茎秆仍为绿色,明显地区别于紫茎品种。这种性状,最容易从苗期鉴别。绿茎“丰收红”的绿茎与其它品种的紫茎性状,由一对等位基因来控制。紫茎对绿茎为完全显性,其杂交一代全部表现为紫色茎。杂交一代自交分离出约四分之一的绿茎植株;杂交一代与绿茎亲本回交则分离出约一半绿茎植株。
(A) “harvest red” green stem trait What is the use? “Harvest red” tomatoes, the performance of cooked, high yield, disease resistance, heat resistance. This species is divided into two types of purple stems and green stems. Green stem “harvest red”, even in the low temperature conditions, nor the formation of cyanine pigment, the stalk is still green, clearly different from the purple stem varieties. This trait, the most easily identified from the seedling stage. Green stem “Harvest red” green stem and other varieties of purple stem traits, by a pair of alleles to control. Purple stems on the green stems for the complete dominant, all of its hybrid generation showed purple stems. Approximately one-quarter of green stem plants are isolated from the cross in the hybrid generation; about one-half of the green stem plants are isolated from the hybrids by backcrossing with the green stem parents.