豇豆新品种成豇12的选育

A New Cowpea Variety-‘Chengjiang 12’

成豇12是以225为母本,以p-3为父本进行杂交,经系统选育而成的极早熟豇豆新品种,播种至始收45~55 d(天)。植株蔓生,主蔓结荚为主,始花节位为第2~4节,花冠浅紫色;嫩荚紫红色,长圆条形、顺直,荚面微凸,平均荚长56.05cm,单荚质量21.08 g,花青素含量457 mg·kg^(-1),种子肾形,种皮浅红褐色;抗根腐病,田间对病毒病的抗性强于对照春秋天紫红和一品红,每667 m^(2)产量2200 kg左右,前期产量占总产量的65%以上,适合四川豇豆产区早熟栽培。

‘Chengjiang 12’is a new cowpea variety with super-early maturity developed by crossing‘225’as female parent and‘p-3’as male parent through systematic breeding.The duration from sowing to harvest is 45-55 days.As a sprawl plant,the first inflorescence sets at the 2nd-4th node.The flower is light purple in color,and newly grown pod is purple-red in color.The pods are oblong,straight and slightly convex.On average,these pods measure 56.05 cm in length and weigh approximately 21.08 g.The anthocyanin content in the young pods is recorded at 457 mg·kg^(-1).The seeds themselves are kidneyshaped,with a light reddish-brown seed coat.Its resistance to virus disease is stronger than that of the contrast‘Chunqiutianzihong’and‘Yipinhong’during the adult stage in experimental fields.Additionally,it demonstrates resistance to root rot during the seedling stage.Under optimal growing conditions,it can yield about 33 t·hm^(-2),with the early yield constituting more than 65%of the total yield.Taken together,it is particularly well-suited for early maturing cultivation in Sichuan.