2012, Volume 14, Issue 11
Strategic Study of CAE >> 2012, Volume 14, Issue 11
Exploring the growth and development properties of early variety of winter rapeseed
The Oil Crops Institute of Hunan Agricultural University, Changsha 410128, China
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Abstract
Nineteen early mature varieties of winter rape and one spring rape variety were sowed in different plots separately at 10 d interval. The growth and development characteristics of early mature variety of winter rape were explored. Results indicate: The complete growth period of early mature variety of winter rape should be approximately 180 days. Both springness and weak response to photoperiod should be their good trait for early mature variety of winter rape. Sowing time would be in late October. And in that sowing time early flowering than normal can be prevented, and also maturity rapseed can be expect in next year' late April. Early mature variety excels in growth properties than the faintly winter varieties, which belong to medium mature rapeseed, and the former gets the seedling stage around 40 days, budding stage around 70 days, flowering stage around 40 days and ripening stage around 30 days. Days from seedling to end of flower are positively correlation with days from seedling to ripening (r≥0.90). 5 Spring rape varieties from Qinghai is weak in response to photoperiod and can be used as early mature variety of winter rape, but long elapse rosette period and flowering stage more concentrated type are much better.
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