CAJ | 학술논문

出穗促进率和株高变化是反映水稻品种光温生态响应的重要指标。能否在育种阶段采用相对容易识别的性状来判断水稻品种的生态响应能力,对广适性品种的选育具有重要意义。本文从12个水稻亲本聚合杂交后代选出的36个高代稳定自交系及其亲本共48份材料,在湖北荆州作中稻以及在广州作早稻和晚稻,研究不同生态条件下株高及各组成成分变化与出穗促进率的变化规律。结果表明,第5节间长度是株高成分中最容易受环境影响的部分,其在不同季节的变化与出穗促进率呈极显著正相关,在早稻和中稻、中稻和晚稻、早稻和晚稻3种情况下,第5节间长度变化和出穗促进率之间的相关系数分别为0.37、0.52和0.49,均达极显著水平,偏相关系数分别为0.42、0.43和0.36,也都达极显著水平。说明第5节间长度容易受光温条件的影响,是生态响应变化的重要指标,越是敏感的材料响应越大,适应性越差。因此,不同环境条件下第5节间长度可用作判断水稻品种对光温条件的响应指标。
출수촉진솔화주고변화시반영수도품충광온생태향응적중요지표。능부재육충계단채용상대용역식별적성상래판단수도품충적생태향응능력,대엄괄성품충적선육구유중요의의。본문종12개수도친본취합잡교후대선출적36개고대은정자교계급기친본공48빈재료,재호북형주작중도이급재엄주작조도화만도,연구불동생태조건하주고급각조성성분변화여출수촉진솔적변화규률。결과표명,제5절간장도시주고성분중최용역수배경영향적부분,기재불동계절적변화여출수촉진솔정겁현저정상관,재조도화중도、중도화만도、조도화만도3충정황하,제5절간장도변화화출수촉진솔지간적상관계수분별위0.37、0.52화0.49,균체겁현저수평,편상관계수분별위0.42、0.43화0.36,야도체겁현저수평。설명제5절간장도용역수광온조건적영향,시생태향응변화적중요지표,월시민감적재료향응월대,괄응성월차。인차,불동배경조건하제5절간장도가용작판단수도품충대광온조건적향응지표。
Heading acceleration percentage and plant height are important indices of rice light and temperature sensitivities, and directly decide the wide adaptability of rice varieties. How to use the legible traits to estimate the wide adaptability of rice varie-ties is a problem worthily studying during breeding stage. In this paper, we studied the relationship between the length of rice plant height and heading acceleration percentage using 48 materials including 12 parents and 36 stable inbred lines selected from 12 parents’ polymerization hybridization progeny, which were planted in Hubei Jingzhou as middle-season rice and in Guangzhou as early rice and late rice. The results indicated that the fifth internode length was the most easily influenced by environments. The length of the fifth internode had extremely significant positive correlation with heading acceleration percentage. In the three cases of early rice and middle-season rice, middle-season rice and late rice, early rice and late rice, the correlation coefficients between length of the fifth internode and heading acceleration percentage were 0.37, 0.52, and 0.49, respectively, and the partial correlation coefficients were 0.42, 0.43, and 0.36, respectively. The correlations all reached the extremely significant level. It showed that the fifth internode length is easily affected by temperature and light conditions, and could be used to preliminarily judge the light and temperature sensitivities of rice varieties.