Traits of Yiyou 673 in Different Sowing Sites of Fujian

The rice qualities of the combination Yiyou673harvested in late-season from 12different planting areas were analyzed and the influence of temperature factors including average temperature, extreme maximum temperature, extreme minimum temperature, and daily range of temperature and so on to physico-chemical properties was explored.The results showed that chalkiness score was the most significantly different, chalky rice rate was the second significantly different, transparence and head milled rice rate were the third significantly different, alkali spreading value and del consistency and amylose content were less significantly different, brown rice rate and polished rice rate were the least significantly different for the variety Yiyou673harvested from different areas.The results also indicated that the correlationship between extreme maximum temperature and chalky rice rate, chalkiness rate was positive, and the same as extreme minimum temperature during grouting period.But the correlation between extreme minimum temperature and chalky rice rate, chalkiness rate was negative.Chalky rice rate and chalkiness rate were increased gradually with the ascended of daily range and extreme maximum temperature, and the reduced of extreme minimum temperature.The quality indexes of Yiyou 673harvested from Fuzhou, Putian and Zhaoan achieved high quality standard.But one or two quality indexes of Yiyou 673harvested from the other sites did not achieve high quality standard.The best qualities and commercial qualities of the variety Youyi673 sowed in the South-East coastal areas of Fujian in late-season could be achieved.