菜薹新品种农丰70天菜心的选育

A New Flowering Chinese Cabbage F1 Hybrid—‘Nongfeng 70 tiancaixin’

农丰70天菜心是以Ogura细胞质雄性不育系LN-20为母本,以自交系利农27号为父本配制而成的菜薹(菜心)一代杂种。中熟,播种至初收约40 d(天),株型直立,平均株高30.3 cm,开展度20.0 cm;叶片卵圆形、碧绿色、有光泽,平均叶长24.9 cm,叶宽8.2 cm,叶柄长6.4 cm;菜薹粗壮、匀称,叶柄短,肉质紧实、脆甜,平均薹高27.6 cm,横径2.1 cm,单薹质量68 g,VC含量166.2 mg·kg^(-1),可溶性固形物含量3.0%,粗蛋白含量1.32%;生长势强,抽薹整齐,每667 m^(2)产量1300 kg左右,适宜广东省平原地区种植。

‘Nongfeng 70 tiancaixin’is a new flowering Chinese cabbage F1 hybrid developed by using Ogura cytoplasmic male sterility line‘LN-20’as female parent and inbred line‘Linong No.27’as male parent.It is of medium maturity,and takes about 40 days from sowing to first harvest.It is of erect plant type.The average plant height is 30.3 cm,and spreading degree is 20.0 cm.Its leaf blade is of oval shape,dark green in color and glossy.The average leaf length is 24.9 cm,leaf width is 8.2 cm and petiole length is 6.4 cm.It is stout and well-proportioned with short petioles,tight,crispy and sweet meat.Its average plant height is 27.6 cm with 2.1 cm transverse diameter and 68 g single plant weight.The VC content is 166.2 mg·kg-1,soluble solid content is 3.0%,and crude protein content is 1.32%.It has strong growth vigor with neatly bolting.It can yield about 19.5 t·hm-2.It is suitable for planting in plain areas of Guangdong Province.