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Two Photoperiodic‐Reactions in Photoperiod‐Sensitive Genic Male‐Sterile Rice
Author(s) -
Yuan ShengChao,
Zhang ZiGuo,
He HaoHua,
Zen HanLai,
Lu KaiYang,
Lian JianHong,
Wang BenXian
Publication year - 1993
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1993.0011183x003300040002x
Subject(s) - photoperiodism , biology , sterility , oryza sativa , panicle , rice plant , pollen , light intensity , botany , horticulture , gene , genetics , physics , optics
Plant photoperiodism is an important principle explaining the growth and developmental processes of many plants, including rice ( Oryza sativa L.). Most researchers currently believe that the effect of photoperiodism in rice plants is restricted to accelerating or delaying heading and flowering. This paper discusses a second effect of photoperiodism on certain lines of rice, the effect of inducing pollen sterility. It summarizes nearly 10 yr of study on photoperiod‐sensitive genic male‐sterile (PGMS) rice. There are two photoperiodic reactions existing simultaneously in the growth and development of PGMS rice. The first photoperiodic reaction (FPR) accelerates or delays both panicle differentiation and heading and is common to all rice lines. The second photoperiodic reaction (SPR) is novel and determines whether pollen will be sterile or fertile. Results show that FPR can be affected by broad changes in photoperiod, light intensity, and temperature and is controlled by one to two pairs of genes. On the other hand, the SPR requires a more critically timed photoperiod, higher light intensity, and higher temperature than does FPR. The SPR is also controlled by one or two pairs of genes and is inherited independently of the genes that modify the FPR. Several lines of PGMS rice have been produced with Nongken58S as a donor parent. Five growth and development phases comprise the life cycle of PGMS rice. The effects of environment on PGMS rice described in this review may guide the practice of breeding and use of PGMS rice in a newly‐developed two‐line production system for hybrid rice.