子叶柄 meaning in English

cotyledon petiole

Cotyledon without petiole showed a significantly lower frequency of shoot regeneration ( 16 . 7 % ) compared with that of entire cotyledon ( 33 . 8 % ) , but the average number of shoots per explant ( 4 . 2 ) was more than that of entire cotyledon ( 2 . 5 ) . no shoot was obtained when the petiole alone was cultured . the frequency of shoot regeneration ( 8 . 3 % , 12 . 5 % ) and average number of shoots per explant ( 2 . 3 , 1 . 7 ) from the upper section of lamina or one side of lamina was lower than those of entire cotyledon
另一方面，以“种都一号”儿菜的不同子叶部位作为外植体所进行的研究结果表明，不带子叶柄的完整叶片其芽再生率( 16 . 70 )显著低于带子叶柄的完整子叶( 33 . 8 ) ，但平均再生芽数，前者( 4 . 2 )却高于后者( 2 . 5 ) ；子叶柄不能进行芽的分化；不带子叶柄的子叶尖端和子叶一侧，其芽再生率(分别为12 . 5 、 8 . 30 )及再生芽数(分别为2 . 3 、 1 . 7 )也明显低于带子叶柄的完整子叶。