干旱区生态环境知识资源中心(Arid): 北方寒旱区冬油菜花芽分化过程观察

Arid

	北方寒旱区冬油菜花芽分化过程观察
其他题名	Flower Differentiation of Winter Rapeseed in Northwest Cold Arid Regions
	张朋飞; 孙万仓; 武军艳; 方彦; 张俊杰; 姜海洋; 陈姣荣; 李学才
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2011
卷号	20 期号:11 页码:60-65
中文摘要	以强冬性白菜型冬油菜陇油6号、天油4号、甘蓝型冬油菜07-G01为材料，对不同抗性冬油菜在中国西北寒旱区的生长发育进行研究。研究结果表明，在西北寒旱气候条件下冬油菜花芽分化始于冬前-2°C左右至-10°C左右时，花芽分化仍在继续，此时已进入花瓣原基和雄蕊原基分化期。当气温降至-15°C时，花芽分化减缓或停止。冬后气温升至-4°C~10°C左右时，花芽分化重新开始，且随着气温的升高花芽分化速度加快。经过10 d左右即可完成一个花器的分化。花芽分化与品种抗寒性强弱有关，抗寒性强的陇油6号花芽分化早，但花芽分化速度较慢。甘蓝型冬油菜的花芽分化晚于白菜型冬油菜，一般在返青后才开始花芽分化。根据观察结果将白菜型冬油菜花芽花器分化按向心分化顺序划分为3时段7时期，即冬前花芽分化启始期、越冬休眠期与冬后花芽快速分化期3个时段，快速分化时段又可划分为7个时期。
英文摘要	The flower development and differentiation of different cold resistance type winter rapeseeds were characterized using strong cold resistance cultivars Longyou 6, Tianyou 4 and 07-G01. Results showed that in Northwest cold arid regions flower differentiation of winter rapeseed began at -2°C before winter and continued at -10°C when flower differentiation came into the petal primordia and stamen primordium stages. When temperature dropped to -15°C the differentiation slowed down or even stopped. Flower differentiation restarted in spring when temperature rose to -4°C to 10°C, and developed faster with the rising temperature. The flower differentiation completed in ten days. It is al- so related to the cold resistance of a cultivar, for example, Longyou 6 is an ultra strong cold resistance cultivar,the flower differentiation started early and developed slowly; the flower differentiation of B. napus is later than that of B. rapus, it usually started until wheat turning green. Based on the re- search the flower bud differentiation of winter rapeseeds could be divided into three stages, ie initia- tion stage before winter, dormancy stage during winter and rapid development stage in spring. The third stage can be divided into seven short steps.
中文关键词	白菜型冬油菜 ; 甘蓝型冬油菜 ; 花芽分化
英文关键词	Winter rapeseed B. rapus Flower bud differentiation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4373224
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227233
作者单位	甘肃省干旱生境作物学重点实验室, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张朋飞,孙万仓,武军艳,等. 北方寒旱区冬油菜花芽分化过程观察[J],2011,20(11):60-65.
APA	张朋飞.,孙万仓.,武军艳.,方彦.,张俊杰.,...&李学才.(2011).北方寒旱区冬油菜花芽分化过程观察.西北农业学报,20(11),60-65.
MLA	张朋飞,et al."北方寒旱区冬油菜花芽分化过程观察".西北农业学报 20.11(2011):60-65.