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Stability of rice grain’s milling quality in relation to genotype × environment interaction and climatic factors.

LI Xiu-fen1;JIA Yan2;DENG Yuan3;LIU Jiang1;JIANG Xiu-ying3;SHEN Feng3   

  1. 1College of Agronomy, Shenyang Agricultural University, Shenyang 110161, China;2Electron Department, Shenyang Artillery Academy, Shenyang 110162, China;3Liaoning Rice Research Institute, Shenyang 110101, China).Chinese Journal of Ecology
  • Received:2008-01-09 Revised:1900-01-01 Online:2008-10-10 Published:2008-10-10

Abstract: Based on AMMI model, the genotype (G) ×environment (E) interaction on the grain’s milling quality of 25 rice cultivars from Liaoning Province was studied, with the stability of the milling quality in relation to the eco-climatic adaptability of these cultivars discussed. The results showed that there existed significant differences in the brown rice rate and head milling rice rate among different sites, varieties, and G×E interactions. The cultivars with high stability in brown rice rate were V12 (Huajing 49), V3 (Liaojing 294), and V4 (0163), while those with high stability in head milling rate were V3, V1 (XianS 38), and V18 (LDC 248). For brown rice rate, cultivars V15 (Shennong 9810), V19 (Yutian 301), and V7 (Qiao 201-2) had special eco-climatic adaptability to low or high temperatures; for head milling rate, cultivar V22 (Ying 9207) presented special eco-climatic adaptability to high temperature, V11 (0157) to low temperature and drought, and V15 (Shenong 9810) and V16 (Longpan 5) to rainless or pluvial conditions, respectively.

Key words: Black soil, Organo-mineral complex, Composition of humus, Types of humic acid