Aerial tubers induced in turnip (Brassica rapa L. var. rapa (L.) Hartm.) by gibberellin treatment

被引：14
|
作者：
Nishijima, T [1 ]
Sugii, H [1 ]
Fukino, N [1 ]
Mochizuki, T [1 ]
机构：
[1] Natl Agr Res Org, Natl Inst Vegetable & Tea Sci, Age, Mie 5142392, Japan
来源：
SCIENTIA HORTICULTURAE | 2005年 / 105卷 / 04期
关键词：
turnip; tuber; histology; genetic analysis; fleshy hypocotyl and root;
D O I：
10.1016/j.scienta.2005.02.005
中图分类号：
S6 [园艺];
学科分类号：
0902 ;
摘要：
We investigated the tuberization ability of the turnip (Brassica rapa L. var. rapa (L.) Hartm.) epicotyl. Epicotyl elongation was forced by continuous gibberellin (GA(3)) application to make the epicotyl distinguishable from the fleshy hypocotyl and root. Tubers were induced mainly on the stunted apical parts that formed after cessation of GA(3) application. All of the five cultivars tested included non-tuberized plants and plants with various degrees of tuberization. Tuberization was caused by secondary growth of the xylem. Many long rows of vessels were arranged radially on the cross-section of the tuber. These histological characteristics are the same as those of the fleshy hypocotyl and root. Tuberization was very likely a genetic trait, because tuberous and non-tuberous lines were clearly distinguishable in the S-2 generation. These results suggest that B. rapa has potential for tuberization ability similar to that of kohlrabi (Brassica oleracea L. var. gongylodes L.) and swollen-stem mustard (Brassica juncea (L.) Czern. et Coss. var. tumida Tsen et Lee). (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：423 / 433
页数：11
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