中晚熟大白菜新品种开蔬五号的选育

A new mid-late maturing Chinese cabbage F1 hybrid Kaishu No.5

开蔬五号是以自交不亲和系98-郑安大为母本、98-230为父本选育而成的中晚熟大白菜杂交1代新品种。该品种在开封地区秋季露地栽培生育期80 d左右,植株平展,外叶浅绿色、呈宽倒卵形,叶帮白色,心叶白色,蛋白质含量(w,后同)0.94 g·100 g^(-1),粗纤维含量0.3%,维生素C含量26.4 mg·100 g^(-1),可溶性糖含量2.54%,β-胡萝卜素含量9.8μg·100 g^(-1),钙含量378 mg·kg^(-1),植株开展度64.6 cm,株高44.7 cm。叶球叠抱,矮桩头球形,球高31.7 cm,球径28.8 cm,单株净菜质量4.5 kg,667 m^(2)产量7500 kg以上。软叶率高,纤维少,品质佳。高抗霜霉病、病毒病、黑腐病三大病害。适合河南、河北、山东、安徽等地秋季露地及设施栽培。2018年通过农业农村部非主要农作物品种登记。

Kaishu No.5 is a new mid-late maturing Chinese cabbage hybrid cultivar developed by two crossing self-incompatible line 98-Zhenganda as male parent and 98-230 as female parent.Its growth period is about 80 days in open field cultivation in autumn in Kaifeng.The plant has light green outer leaves,white midribs and hearts,feature wide inverted-oval and exhibit notable nutritional values,including 0.94 g·100 g^(-1)protein,0.3%crude fiber,26.4 mg·100 g^(-1)vitamin C,2.54%soluble sugar,9.8μg·100 g^(-1)β-carotene,and 378 mg·kg^(-1)calcium.With an average leaf span of 64.6 cm and a plant height of about 44.7 cm,Kaishu No.5 forms compact,roundish heads that stand approximately 31.7 cm tall with a diameter of 28.8 cm.The net weight of each plant yield around 4.5 kg,contributing to a total yield exceeding 7500 kg·667 m^(-2).Its tender leaves,low fiber content.this variety demonstrates strong resistance to major diseases,including downy mildew,viral infections,and black rot.It is well-suited for both autumn open-field and protected cultivation in Henan,Hebei,Shandong,and Anhui.Kaishu No.5 earned registration as a non-main crop variety from the Ministry of Agriculture and Rural Affairs in 2018.