조기재배 적합 벼품종 육성을 위한 재조합집단에서 완전미율과 농업형질과의 상관분석

• Published in: Korean journal of crop science Vol. 57; no. 1; pp. 1 - 6
• Main Authors: 이종희, Jong-hee Lee, 조준현, Jun-hyun Choi, 김상열, Sang-yeol Kim, 이지윤, Ji-yoon Lee, 김춘송, Choon-song Kim, 여운상, Un-sang Yeo, 송유천, You-chen Song, 손영보, Young-bo Sohn, 오명규, Myung Kyu Oh, 강항원, Hang-won Kang, 남민희, Min Hee Nam
• Format: Journal Article
• Language: Korean
• Published: 한국작물학회 31.03.2012
• Subjects: breeding; culm length; early transplanting; head rice; rice; 농학; early transplanting; head rice; rice; culm length; breeding
• ISSN: 0252-9777; 2287-8432

In this study, we conducted to identify predictive parameters affecting the head rice ratio for developing high quality rice cultivar adaptable to the early-transplanting cultivation. The recombinant inbred lines (RILs) population from a cross between the parents of Pungmi and Koshihikari was used for test materials. Variations were observed in most of the measurements, eg culm length (ranging from 51.0 cm to 97.0 cm), amylose content (14.0 ~20.1%), protein content (5.2 ~7.4%), pasting properties (peak viscosity, 227.2 ~309.8 RVU) and head rice ratio (67.7~96.7%). Significant correlations between head rice ratio versus culm length (0.443) and head rice ratio versus protein content (-0.458) were detected in RIL population. However, culm length was negatively related to lodging tolerance. In order to develop a commercially suitable cultivar, selection for short culm and high head rice ratio of rice grains with physiochemical properties such as protein content, amylase content and taste value should be considered. This results can be used to increase the efficiency of breeding program for developing a new early-maturing rice variety adaptable to early transplanting cultivation in Korea.