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Lookup NU author(s): Dr Eric Evans
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The effect of sowing date on wheat,development was investigated using several varieties mt three sites in England during the period 1989-93. Developmental stages measured were double ridge, terminal spikelet, flag leaf ear emergence and anthesis. The duration of the period over which the double ridge stage occurred was longer than the time from earliest to latest sowing. For the of her stages the duration was shorter for example in one experiment sowings were made over 70 days but anthesis occurred over a period of eight days. There were differences among varieties in the duration of different phases of the life cycle. From September sowings spring varieties generally developed move quickly than winter varieties, but there were considerable differences in rate of development both among winter and spring varieties. From October and November sowings the response was similar in all varieties. There were marked differences in development among seasons and sites, generally related to temperature differences. In one season (1992-3) a period of unusually low temperature in October led to rapid early development from early sowings. The physiological basis for variation in development and the implications for exposure to favourable growing periods or environmental hazards are discussed.
Author(s): Spink JH, Kirby EJM, Frost DL, Sylvester-Bradley R, Scott RK, Foulkes MJ, Clare RW, Evans EJ
Publication type: Article
Publication status: Published
Journal: Plant Varieties and Seeds
Year: 2000
Volume: 13
Issue: 2
Pages: 91-108
ISSN (print): 1479-2621
ISSN (electronic): 1479-263X
Publisher: Cambridge University Press
URL: http://www.cabdirect.org/abstracts/20003035046.html?freeview=true
