anthesis in rice



Thermal stress and in particular heat during anthesis causes sterility in rice inflorescences. Rice spikelets open in the morning and close a few hours later. Genotypic variation in the time of day of anthesis is considered an escape mechanism from thermal stress, but little is known on its dependency on environmental
25.10.2009 -
13.02.2015 -
Flower development in rice can be divided into two big stages: pre-flowering ... Usually a rice flower is ready for fertilization 1 day before it starts flowering. ... Once pollen in the anther (male reproductive part) and the embryo sac in the ovule (female reproductive part) are fully developed, the next stage is flowering, anthesis.
21.12.2017 -
EMASCULATION AND POLLINATION TECHNIQUES IN CEREALS. 1. RICE (Oryza sativa) (2 n = 24) (Family – Poaceae). In rice anthesis commences shortly after emergence of panicle. Spikelets at the tip bloom first and proceed downwards. Anthesis time 8-10 am. Each spikelet remain open 30 minutes and then closes.
temperature (Matsui et al., 1997; Vara Prasad et al., 2006). There- fore, identifying genotypes that can withstand high temperature. Genetic Analysis of Heat Tolerance at Anthesis in Rice. S. V. K. Jagadish, J. Cairns, R. Lafitte, T. R. Wheeler, A. H. Price, and P. Q. Craufurd*. ABSTRACT. Genetic analysis of heat tolerance will
Genetic analysis of heat tolerance will help breeders produce rice (Oryza sativa L.) varieties adapted to future climates. An F6 population of 181 recombinant inbred lines of Bala (tolerant) × Azucena (susceptible) was screened for heat tolerance at anthesis by measuring spikelet fertility at 30°C (control) and 38°C (high
25.06.2011 -
To study the genetic basis of heat tolerance at anthesis, a set of chromosome segment substitution lines (CSSLs) derived from Sasanishiki (japonica ssp. heat susceptible) and Habataki (indica spp. heat tolerant) were used for analysis across three high temperature environments. Spikelet fertility (SF), daily flowering time

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