于１９９８年底开始选育菜心杂种一代，育种途径是先选育雄性不育系，再用不育系作母本，用优良自交系作父本配制一代杂种。现已育成形态、熟性、色泽不同的不育系１８个和自交系一批，用其中几个试配了一批杂种一代，经品比，这些杂种产量大多优于四九菜心和东莞４５天。现将 At the end of 1998, we began to breed hybrids of Brassica campestris. The breeding methods were to first male sterility line, sterile line as female parent and elite inbred line as male parent. Eighteen CMS lines and inbred lines with different morphological, mature, and different color have been bred and several hybrids have been tested with several of them. Yields of these hybrids are better than those of the four-nine 45 days in Dongguan Now