[Dynamic changes of rice (Oryza sativa L.) tiller angle under effects of photoperiod and effective accumulated temperature].
Using rice variety DI508 as test material, a field experiment of different seeding dates and a test with plant growth chamber were conducted to study the dynamic changes of rice tiller angle under effects of different photoperiod and effective accumulated temperature. Under field condition, the tiller angle of DI508 plants changed gradually into erect after 10-15 days of photoperiod becoming shorter (since the Summer Solstice on 21st June), irrespective of seeding dates (4th April, 5th May, and 4th June). Under controlled photoperiod, the tiller angle changed in the same way as in the field. Shorter lighting treatment (10 hours) advanced the tiller angle change, while longer lighting treatment (14 hours) delayed the change. Effective accumulated temperature had no effects on the tiller angle change of DI508.
Ouyang
You-Nan
YN
State Key Laboratory for Rice Biology, China National Rice Research Institute, Hangzhou 310006, China. younan.oy@gmail.com
Li
Chun-Sheng
CS
Zhang
Shan-Qing
SQ
Wang
Hui-Min
HM
Zhu
Lian-Feng
LF
Yu
Sheng-Miao
SM
Jin
Qian-Yu
QY
Zhang
Guo-Ping
GP
D012275:Oryza / Q000235:genetics / Q000254:growth & development / Q000502:physiology*; D017440:Photoperiod; D013696:Temperature