豇豆新品种湘豇2001-4的选育

针对湖南省豇豆主栽品种春季栽培雨水较多，易出现徒长的问题，选择较耐肥、不易徒长的长豇3号为母本，齐尾青为父本进行杂交，通过连续10代的系统选育，育成不易徒长的早熟豇豆新品种湘豇2001-4。该品种早熟，春季栽培全生育期100～110 d（天），播种至始花65～75 d（天）|夏秋栽培全生育期90～100 d（天），播种至始收45～50 d（天）。植株蔓生，3～5个分枝，主蔓长约3 m，第1花序节位3～5节，每1花序结荚2～4根。主侧枝均能开花结荚，花淡紫色，豆荚绿白色，荚长约59 cm，横径约0.84 cm，单荚质量约28 g，单荚种子数18粒，田间调查对煤霉病和锈病的抗性与对照之豇28-2相当，比较耐肥。每667 m2豆荚产量2 500 kg左右，适合春、夏、秋季栽培。

A New Cowpea Variety——’Xiangjiang 2001-4’

According to the condition of Hunan Province cowpea production in spring cultivation is more rainfall and cowpea varieties are very easy to grow rapidly,we selected’Changjiang No.3’,which is endurable to fertility and grow up slowly as female parent and’Qiweiqing’as male parent.After 10 years’continuous and systematic cross breeding,’Xiangjiang 2001-4’was developed.This variety was an earlier variety did not grow very fast.It can be cultivated in spring.Its total growing period is about 100-110 d.It can be harvested 45-50 d after sowing.The plant is sprawled with 3-5 branches.The main vine is about 3 m in length.The first flower sets on the 3-5th nodes.The first flower bears 2-4 pods.The flower is light purple in color.The pod is green white in color,59 cm in length,and 0.84 cm in diameter.The single pod weight is about 28 g.There are 18 seeds in a single pod.In field investigation,its resistance to corcospora fuligenae and rust is equal to that of the contrast’Zhijiang 28-2’.It yields about 37.5 t·hm-2.It is suitable to be cultivated in spring,summer and autumn.