PHYSIOLOGY OF FLOWERING IN SACCHARUM .1. DAYLENGTH CONTROL OF FLORAL INITIATION AND DEVELOPMENT IN S SPONTANEUM L
PHYSIOLOGY OF FLOWERING IN SACCHARUM .1. DAYLENGTH CONTROL OF FLORAL INITIATION AND DEVELOPMENT IN S SPONTANEUM L
复制标题
DOI：
10.1093/jxb/24.3.549
复制
发表时间：
1973-01-01
影响因子：
6.9
通讯作者：
JULIEN, MHR
中科院分区：
文献类型：
--
作者：
JULIEN, MHR
两个割手密无性系开花。受光周期控制。12 h 30 min的中间天数对花茎发育的最早期、诱导期和花序轴原基起始期（IAP）有较好的促进作用，而13 h以上的中间天数则对后续的花序分支原基起始期（IBP）有较好的抑制作用。小穗原基分化期（ISP）表现为数量上的中间反应，最适光周期为9 ~ 11 h。分化的花序的伸长被认为是只有轻微的光周期为13小时或更长的克隆之一敏感。在诱导后的阶段不利的光周期导致花序发育的逮捕或延迟，当这些在IAP和IBP阶段，通常发生的营养条件的逆转。
Flowering in two clones ofSaccharum spontaneumL. is controlled by photoperiod. The earliest stages of development, ‘induction’ and ‘initiation of the inflorescence axis primordium’ (IAP) were optimally promoted under intermediate days of 12 h 30 min, while the subsequent stage ‘initiation of inflorescence branch primordia’ (IBP) was inhibited by days longer than 13 h. The following stage ‘initiation of spikelet primordia’ (ISP) showed a quantitatively intermediate response with an optimum photoperiod of 9 h to 11 h. The elongation of the differentiated inflorescence was found to be only slightly sensitive to photoperiods of 13 h or longer in one of the clones. Unfavourable photoperiods at stages following induction resulted in the arrest or delay of inflorescence development and when these were given during the IAP and IBP stages, reversion to the vegetative condition commonly occurred.