Abstract:
Two japonica hybrid rice cultivars (9946 and 1052), released in recent year in Liaoning Province, and their parents were used to investigate their chalky traits, their difference in spatial distribution and genetic derivation of chalky appearance among grains located different positions within a panicle. The results showed that grains on the basal rachis in a panicle generally exhibited the greatest chalkiness grain rate, chalkiness area and chalkiness degree, followed by those at the middle part, the grains on a secondary branch were greater than those on a primary branch. If the difference between both parents enlarged, the relevant heritability would be increased. On the other hand, Chalky traits were influenced by heredity and cultivated condition. Therefore, the hybrid with low chalkiness degree could be developed by the combination of good varieties with small distinction in chalkiness degree with excellent cultivated technique.
Key words:
Japonica hybrid rice,
Position of rice panicle,
ChalkinessQuality trait
CLC Number:
ZHAO Dong-xia, GUO Yu-hua, LAN Cai-xia, CHENG Hai-tao, HUA Ze-tian, ZHAO Xin-wen, HE Ran. Separated Properties in Chalky Traits of Grains Located at Different Positions within a Panicle for Japonica Hybrid Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(3): 9-11. doi: 10.3321/j.issn:1000-7091.2007.03.003.