期刊论文

Comparison of Acid Resistance in Early Rice Varieties

中文

杂交水稻

1005-3956

2016

31

5

56-64

10.16267/j.cnki.1005-3956.201605022

31171494:国家自然科学基金 2011BAD16B01:国家科技支撑计划 2012BAD04B10-01:国家科技支撑计划 2013BAD07B11-02:国家科技支撑计划

本校为第一机构

以发芽率与产量为衡量指标,通过室内发芽实验和大田产量试验,比较了30个早稻品种的耐酸性差异,并研究了萌发期弱耐酸性品种种子发芽特性对不同pH条件的响应。结果表明,不同早稻品种耐酸性差异明显,湘早籼44号和德111A/974为强耐酸性品种,湘早籼45号、陆两优211、陆两优611、T优705、陵两优396和陵两优104为弱耐酸性品种,其他品种为中耐酸性品种。随pH下降,萌发期弱耐酸性品种的种子发芽率、发芽指数持续下降,异状发芽率上升,而强耐酸性对照品种变化不明显。在酸性环境下,弱耐酸性品种的发芽率、发芽指数、活力指数不同程度低于强耐酸性对照品种,且pH值越低,差异越显著。

The acid resistance of 30 early rice varieties,including six conventional rice varieties and 24 hybrid rice varieties,was compared under the conditions of the lab germination test and field yield evaluation with germination rate and grain yield as the measurement indexes. The response of the varieties with weak acid resistance（ or acid sensitive varieties） in germination was further studied on germinating characteristics to different p H gradients. The results showed that there existed marked difference of acid resistance among the early rice...