论文部分内容阅读
普通野生稻(Ovgzasativa L F spontanea)和药用野生稻(O.officinalis)刚成熟收获的新鲜种子休眠性深。其休眠期长短与种性有关,普通野生稻的近栽型(直立型)约半年左右,典野型(匍匐型)约一年左右,药用野生稻则是一年以上。休眠种子在常规的发芽条件下极难发芽或不发芽。本试验用0.1M、0.2M 硝酸或1200ppm 赤霉素溶液浸种24小时后再置于40℃昼/30℃夜变温条件下发芽,能完全打破休眠,发芽率可达90%左右,而且发芽迅速、整齐,幼苗健壮,方法简便,可用于野生稻保存、评价鉴定和利用研究方面的种子批量发芽.
Freshly harvested fresh seeds from Ovgazasativa L F spontanea and O. officinalis are dormant deeply. The dormant period is related to the species. The wild type of Oryza rufipogon (upright type) is about six months old, the wild type (creeping type) is about one year, and the medicinal wild rice is more than one year. Dormant seeds are extremely difficult to germinate or germinate under conventional germination conditions. The test with 0.1M, 0.2M nitric acid or 1200ppm gibberellin solution for 24 hours and then placed in 40 ℃ day / 30 ℃ night temperature conditions germination, can completely break dormancy, the germination rate of up to 90%, and the rapid germination , Tidy, robust seedlings, the method is simple, can be used for wild rice seedling evaluation, identification and utilization of seed germination.