杂色蚕豆新品种“清蚕2号”选育初探

Preliminary Study on the Breeding of a New Cultivars of Variegated Broadbean'Qingcan No.2'

2010年夏在慈溪市白沙路鲜食白花大粒蚕豆大田中发现因小黑蚕豆和白花大粒蚕豆自然杂交而产生变异的F_(0)代变异单株,然后经F_(1)到F_(5)代的连续单株选择,经过F_(6)代的株系选择和F_(7)代的优系繁育,育成了杂色蚕豆新品种——清蚕2号。其株高约90 cm,分枝6~7个,花瓣上部白色,花托处红色,每荚1~3粒,3粒荚占比仅10%,干豆形状短圆,干豆色泽底色为淡黄色,其侧面有八字形棕褐色条带,豆眼黑色,百粒质量为100 g。"清蚕2号"株型紧凑,植株中等,整齐度高,田间性状稳定,长势较旺盛,抗病性较强,适应性、抗逆性强,结荚多,产量高,品质好。

In the summer of 2010,generation F0,which was produced through the natural hybridization between little black broadbeans and white flower broadbeans,was found in Baisha road of Cixi city.Then,through continuous single plant selection from generation F_(1) to F_(5),strain selection in generation F_(6) and optimization breeding in generation F_(7),a new variegated cultivar of broadbeans,'Qingcan No.2'was bred.The plant height was about 90 cm with 6-7 branches.The upper part of the petals was white and the recepreceples were red.Each pod contained 1-3 grains,and the proportion of pods with 3 grains was only 10%.For the shape,the dry bean was short and round.For the color,it was light yellow,and there were splayed reddish brown stripes on its sides.Moreover,its hilum was black.For the weight,weight of each hundred grains was about 100 g.The plants of'Qingcan No.2'were compact,medium-sized and in similar height.Furthermore,they were stable,well-grown with strong disease resistance,adaptability and stress resistance.In general,it was high-yield and quality.