绿豇豆新品种湘豇2002-5的选育

Breeding of New Green Kidney Bean Variety Xiangjiang 2002-5

以之豇28-2为母本,湘豇2号为父本进行杂交,通过连续10代的系统选育,育成豇豆新品种湘豇2002-5。该品种花淡紫色,豆荚深绿色,荚长约49.6 cm,荚横径约0.77 cm,单荚重约16 g,单荚种子数18粒,早熟。春季栽培,全生育期100~110 d,播种至始花65~70 d,抗病性强。夏秋栽培全生育期90~100 d,播种至始收45~50 d。豆荚整齐一致,长度适中,肉质细嫩,蛋白质含量高,达4.17%,商品性好。每667m2豆荚产量最高达2 400 kg左右,适合春、夏、秋季栽培。

Taking Zhijiang28-2 as maternal plant and Xiangjiang No.2 as male parent to conduct hybridization,through constant ten-generation systematic selection,the new green kidney bean variety Xiangjiang2002-5 was bred.The variety has light purple flower,deep green pod,about 49.6 cm in pod length,0.77 cm in pod width,16 g in unit pod weight,18 seeds in unit pod,early-mature.If cultivated in spring,the whole growing period of Xiangjiang2002-5 was 100~110 days,it were 65~70 days from seeding to the first flower,and it had high disease resistance;If cultivated in summer,the whole growing period of Xiangjiang2002-5 was 90 ~100 days,it were 45 ~50 days from seeding to first harvest.Its pods were regular and uniform with medium length and tender meat,the protein content as high as 4.17%,and the commodity value was great,and the highest yield of Xiangjiang2002-5 reached 36 000 kg/hm2.The variety is suitable for cultivating in spring,summer and autumn.