In vitro conservation of sugarcane germplasm

被引:27
|
作者
de Lemos, EEP [1 ]
Ferreira, MD [1 ]
de Alencar, LM [1 ]
Neto, CER [1 ]
de Albuquerque, MM [1 ]
机构
[1] Univ Fed Alagoas, Ctr Ciencias Agr, BR-57072970 Maceio, AL, Brazil
关键词
Saccharum; explants; tissue culture; micropropagation; plant breeding;
D O I
10.1590/S0100-204X2002001000002
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The objective of this work was to evaluate the effect of temperature, of sucrose, sorbitol and manitol, as carbon source and osmotic regulator, and of abscisic acid, as growth regulator, on in vitro germplasm conservation of sugarcane. Stem tips of 10 month old plants collected from the sugarcane germplasm bank of the Universidade Federal de Alagoas in Brazil were introduced in vitro and secondary shoots were produced in a multiplication medium. New shoots collected after four subcultures were used in three conservation experiments. There was a positive effect of the low temperature and sucrose as an osmotic regulator and carbon source in maintaining the viability of the explants cultured in vitro. Abscisic acid (1 mg/L) was essential to maintain the explants in a reduced growth condition for 52 weeks without any subculture. The explants promptly returned to normal growth in vitro or were readily acclimatized after 52 weeks of conservation, in the medium with abscisic acid (1 mg/L) plus sucrose (20 g/L) at 15degreesC.
引用
收藏
页码:1359 / 1364
页数:6
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