关键词: 青花菜, 中熟, 品种

Abstract: ‘Lingxiu 3’is a new mid-maturing broccoli F1 hybrid inbred by female parent sterile line CMS-LF-81 and male parent 10J-38.‘Lingxiu 3’has vigorous plant. Its plant height is 60 cm，expansion is 65 cm with long oval，dark green，thick wax leaves. Its curd is hemisphere shaped with dark green，head with small buds and no leafy，no hollow stem. The flower buds will not turn purple at low temperature. Its single head weight is about 0.55 kg，the optimal density was 40 500 strains ? hm-2 and its total yield is 22 500 kg ? hm-2. It takes about 80 d from transplanting to harvest in autumn and about 60 d in spring. Its fits fresh-keeping and quick-frozen procossing. It has good resistance to black rot and downy mildew，is easy to grow and easy cultivation. The cultivar suits to be planted in North of China in spring and autumn.

Key words: broccoli, middle maturity, cultivar