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vegetation
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cucumber have seed stock
黄瓜留种
黄瓜植株上不同部位所留种瓜后代早熟性各不相同。第2个和第3个瓜的早熟性不如第1个瓜,但结第1个瓜时气温低,往往授粉不好,种子小而少,要进行人工授粉来提高种子的数量和质量。第2个瓜和第3个瓜的种子既饱满又多,因此,以早熟为选种目标应留第1个瓜做种,一般大田用种可选留第2个或第3个瓜做种。