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‘珍绿55’是以自交不亲和系‘J537’和‘Q667’杂交育成的青麻叶大白菜一代杂种,为秋早熟类型,生长期为65d左右,植株直立,株高42.5cm,开展度49.5cm;叶色深绿亮泽,叶面微皱,叶球长筒疏心形,心叶黄色;球高39.2cm,球径11.5cm,球形指数3.4,单球质量2.0kg左右,产量75000kg·hm-2;商品性好,品质优;高抗病毒病,抗霜霉病和黑腐病;适合北方秋季栽培。
’Zhenlun 55’ is a new generation of Chinese cabbage (Brassica campestris ssp.chinensis) which is a hybrid of selfing incompatible lines ’J537’ and ’Q667’. It is a type with early maturity and the growth period is about 65 days. The plant is erect, the plant height is 42.5cm, The development of the degree of 49.5cm; leaf color dark green and shiny, foliar wrinkled, sparsely shaped leaf heart, heart yellow; ball 39.2cm, ball diameter 11.5cm, spherical index 3.4, single ball mass 2.0kg, Yield 75000kg · hm-2; Good commercial, excellent quality; High anti-virus, anti-downy mildew and black rot; suitable for northern cultivation.