“扬豇40”豇豆植株蔓生,生长势强,主侧蔓均结荚,尤其侧蔓结荚性能好。主蔓在7～8节开始出现花序,侧蔓第一花序着生在1～2节,花紫色。嫩荚长圆条形、浅绿色,长70厘米以上,横径0.8厘米左右,肉质嫩,纤维少,味 “Yang cowpea 40 ” cowpea plant vine, growing strong, the main side of the vine are pod, especially the side of the vines pod performance. The main vine in 7 to 8 began to appear inflorescences, lateral vine first inflorescence was born in 1 to 2, flowers purple. Tender pods oblong bar, light green, longer than 70 cm, diameter of about 0.8 cm, tender meat, less fiber, taste