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Grain shape is a key trait in rice breeding. Although many QTLs and genes of grain shape have been identified, how different combinations of alleles of these genes affect grain shape is largely unknow...
The variation of seedling growth, which may affect seedling salt tolerance, of 12 rice cultivars was examined based on the pattern of seedling fresh weight histogram. Some cultivars showed a normal di...
Classification of Asian Deepwater Rice (Oryza sativa L.) and African Deepwater Rice (O. glaberrima Steud.) Based on the SDS-PAGE Analysis of Seed Proteins.
To clarify the morphological features and internal structure of shoot apex of MC seedlings, one of the rice seedlings type, in relation to agricultural significance, an Indian rice cultivar, Basmati ...
The characteristics of mesocotyl and internode growth of rice cultivars (Oryza sativa L.) and wild taxa of Oryza were investigated using the following cultivars and strains : (1) 260 IRRI's core coll...
We report the characterization of seedlings of LM10 which is one of the four short-root mutants derived from an M2 population of rice (Oryza sativa L., cv. IR8) seeds treated with NaN3. The morphologi...
The research was conducted to analyze the relationships between sink capacity expressed by hull weight per hill (SW) and culm length (CL) and weight of hulls per panicle (hW, ). hW and CL were adopted...
Cool weather is a serious climatic constraint for rice cultivation in hilly and mountainous regions. Deep-flood irrigation is known as the most effective method to protect rice plants from cool weath...
In submerged direct-seeding of rice cultivation, the drainage after seeding contributes to stabilization of seedling establishment and the amount of oxygen generating products (Calper Fine Granule, si...
We have developed acidified porous hydrate calcium silicates (APS) with the final pH of 3.0, 3.9 or 5.3 by adding of sulfuric acid to porous hydrate calcium silicate material. In this study, the effec...
To evolve a lodging resistant, abiotic stress tolerant, and high yielding rice variety for the pokkali areas of Kerala, F1 of the cross between ‘Cheruvirippu’ and IR 5 was crossed with ‘Jaya’. Bas...
Genetic diversity analysis and pedigree evaluation were carried out using Random Amplified Polymorphic DNA (RAPD) molecular markers on 20 true breeding and high yielding rice genotypes of Kerala. Re...
以拟南芥AtNHX1 cDNA 片段作为探针,筛查水稻盐胁迫植株叶片cDNA 文库,获得与AtNHX1同源的水稻新型液泡Na+/H+逆向转运蛋白基因(OsANT1)。序列分析表明,OsANT1 全长cDNA为2 178 bp,包括一个长度为1 608 bp的完整开放阅读框,编码535个氨基酸残基。在DNA水平上,OsANT1基因含有15个外显子和14个内含子,长度为4 835 bp。OsANT1...
感光性不同的4个光敏感雄性不育粳稻经受14小时光周期下的31/27℃、31/22℃、31/17℃、27/22℃和27/17℃ 5种光期温度/暗期温度组合处理。考察其花粉育性的结果表明:1,在试验设计的光、温条件下,参试的不育品系都表现高度的光敏感雄性不育。但是,不同温度处理引起了败育水平的显著变化。2,光期温度下降4℃、暗期温度相同时,花粉育性极显著地增加;光期温度不变,暗期温度变动幅度为5℃时(...
近十多年来,我国裁培稻花培育种进展很快,主要是花药培养技术有所改进,诱导频率大大提高,增加了选择的机率,但野生稻花药培养目前在国内外研究较少,诱导频率也较低。为了获得野生稻某一特性的纯合体,自1984年以来,我们对普通野生稻花药培养技术进行了研究。结果不同的材料,不同培养基成份,不同低温预处理,对诱导频率都有影响。

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