摘要
本文报道了１９９８年度云南省甘蔗研究所光周期诱导甘蔗开花及杂交利用结果。本研究以４月１日和６月１日两种起始处理时间，１２ｈ２５ｍｉｎ和１２ｈ１５ｍｉｎ两种固定日长处理，于１０月１日起日递减光３０ｓ至抽穗时止的光周期诱导技术分别对７个难花亲本和７个常用亲本进行了开花诱导。结果表明：在不同的光周期处理下，粤糖５７／４２３、Ｃｏ４１９、闽糖７０／６１１、罗汉蔗等４个难花亲本被诱导开花；７个常用亲本全部孕穗或开花，并提早花期３－４个月。利用诱导开花亲本分别与割手密（Ｓ．ｓｐｏｎｔａｎｅｕｍ）、斑茅（Ｓ．ａｒｕｎｄｉｎａｃｅｕｍ）、滇蔗茅（Ｅ．ｒｏｃｋｉ）、芒（Ｍ．ｓｉｎｅｎｓｉｓ）、河八王（Ｎ．ｐｏｒｐｈｙｒｏｃｏｍａ）等野生种成功地进行杂交或远缘杂交，获得大量实出苗，为野生资源的利用及优良品种的选育奠定了基础。
This article reports the results of the photoperiod induction flowering of sugarcane and their hybridization use on the Sugarcane Research Institute , Yunnan in 1998. The experiments used 7 shy flowering parents and 7 frequently used parents as entry, started on April 1 and June 1 respectively, with two kinds of daylight duration treatments of 12 h 25 min and 12 h 15 min. From October 1, both daylight treatments were reduced by 30 s every day until tassel. The results showed that four shy flowering varieties had been induced flowering, which were Yuetang 57/423, Co 419, Mintang 70/611, Luohanzhe. Seven frequently used varieties had been inducted pregnant or flowering. And their flowering time were three to four days earlier than usual. They had been successfully crossed with S. spontaneum, S. arundinaceum, E. rockii , M sinensis, N. porphyrocoma etc. and a lot of seedling plants had been gained.
基金
国家"九五"育种攻关
关键词
甘蔗
光周期
杂交
开花
诱导
sugarcane, photoperiod, hybridization
