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利用Lima品种作为父本与冬季栽培的番茄品种 (413、4 5 2、4 99、5 14和 5 6 0 )进行杂交 ,改良冬季栽培番茄品种的产量和品质 ,通过对杂交后代自交纯化 ,获得 4 5 2×Lima自交系产量最高 ,为 4 4 .2 9t·hm-2 ,比对照Lima和VF134 1 2增产 33.0 %和 31.6 % ,大部分自交系的果实硬度与对照相同 ;将耐热品种 6 6 7(CL5 915 2 0 6D4 2 5 0 )和 6 6 9(CL5 915 2 2 3D4 2 1 0 )与耐热的冬季栽培番茄品种进行杂交 ,然后自交并对其自交系的耐热性和果实品质进行选择 ,其中 5 0 2× 6 6 9、5 74× 6 6 7的自交系产量分别为 6 9.16和 6 6 .16t·hm-2 ,比对照Lima和VF134 1 2增产 18.2 %和 38.7% ,果实硬度与对照相同 ;将耐热品种L2 2和含突变基因 (nor1、nor2 )材料进行杂交和回交 ,对L2 2的货架期进行改良 ,其中BC2 和BC3 产量比L2 2高 4 %～ 9% ,果实在室温下保存 30d ,其完好率为 18%～ 38% ,而L2 2的果实完好率则为 0。
The yield and quality of winter cultivated tomato cultivars were improved by crossing Lima varieties as the male parent and the winter cultivated tomato varieties (413,45, 2,499,514 and 5,600). By selfing the hybrid progeny, The yield of 4 5 2 × Lima inbred lines was the highest, which was 44.29t · hm-2, which increased 33.0% and 31.6% comparing with the control Lima and VF134 1 2, respectively. The fruit firmness of most inbred lines was the same as that of the control; Heat-tolerant cultivars 6 6 7 (CL5 915 2 0 6D4 2 5 0) and 6 6 9 (CL5 915 2 2 3D4 2 1 0) were crossed with heat-tolerant winter-cultivated tomato cultivars, then selfed and their inbred lines Heat-resistant and fruit quality. The yield of 5 0 2 × 6 6 9,5 74 × 6 6 inbred lines were 6 9.16 and 6 6 .16 t · hm-2, respectively, which were higher than that of the control Lima and VF134 1 2 increased by 18.2% and 38.7%, respectively. The fruit firmness was the same as that of the control. The varieties L2 2 and nor1, nor2 were crossed and backcrossed to improve the shelf life of L2 2. The yield of BC2 and BC3 The fruit quality was 4% ~ 9% higher than that of L2 2, and the fruit was stored at room temperature for 30 days. The intact rate of fruit was 18% ~ 38%, while that of L2 2 was 0%.