Preliminary Studies on New Sugarcane-forage Varieties by Breaking Intergeneric Barrier of Hybridization
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摘要: 应用固定日长加蓝光与远红光作辅助光照诱导甘蔗开花,使甘蔗与抗逆性及再生性强的斑茅、芒等,通过解决母本花穗去雄、父母本花期不遇和属间杂交不孕等一系列障碍,实现属间杂交成功,定向培育出亚热带地区既耐旱耐瘠又高产优质、终年可供青料的牧草新物种。经过几年的探索,目前已初步选育出若干优异的牧草蔗新品系,其产量及品质均优于对照的甘蔗良种,且在天然条件下终年不开花结实,冬季不枯萎,四季常青,可解决冬季、早春青料供应短缺问题。Abstract: Some fine sugarcane varieties were induced to bloom by photoperiodic treatment with blue and far-red light. The intergeneric hybridization between sugarcane and S. arundinaceum, sugarcane and Miscanthus anderss have been achieved by settling the technical barriers, i e spike castration of female plants; unsynchronization of flowering periods between male and female plants; and infertility of intergeneric hybridization. The new forage-grass hybrid progenies have been supplied as green fodder all the year round because of their non-flowering and non withering characters in the natural condition of subtropic area.
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Key words:
- Genus cross /
- Breeding /
- New species of forage-grass
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