叶柄的 meaning in English
petiolar
Examples
- Nutritional components analysis of petiole from rheum . tanguticum maxim . ex balf
唐古特大黄叶柄的营养成分分析 - On the under epidermis and petiole epidermis of sophora flavescens ait . is founded salt gland which has a secretory cell and a basal cell for the first time
首次在苦参叶的下表皮及叶柄的表皮上发现了盐腺。该盐腺由一个头细胞和一个基细胞构成。 - It showed that the induction efficiency of the resistant calli were the same among all explants of different age , but the embryos on the calli from explants of 7 days appeared earlier than those from explants 11 and 30 days . in order to compare the resistant calli induction efficiency , petioles and hypocotyls were excised from 30days aseptic seedlings to transform with pbinctbs under the same condition . the resistant calli induction efficiency of petioles was higher than those of hypocotyls . a more detailed analysis of the different types of explants showed that the number of pcr positive plants induced from petioles was higher than that from hypocotyls
在相同条件下的转化实验中，发现不同苗龄的外植体的抗性愈伤的诱导频率基本相同:还进一步研究了胡萝卜同一苗龄不同部位的抗性愈伤形成率，同时用3od苗龄(照光3周)的叶柄和下胚轴做转化实验，发现叶柄的抗性愈伤形成率高于下胚轴的抗性愈伤形成率，进一步的实验发现，由叶柄诱导的苗子的阳性率高于由下胚轴诱导的苗子的阳性率，此结果和pawlicki的结论是一致的。 - 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。