水稻谷壳充实程度对籽粒接受灌浆物质能力的影响

Effect of hull plumpness on grain capability of substances in rice

以常规粳稻盐粳2号、常规籼稻扬稻4号、亚种内杂交稻汕优63、亚种间杂交稻02428/明恢63为供试材料,将成熟期谷粒分成不同比重等级谷粒,研究水稻谷壳充实程度对籽粒接受灌浆物质能力的影响。结果表明:无论是常规籼、粳稻、还是亚种内和亚种间的杂交稻,其不同比重等级谷粒的糙米重、谷壳重、单位谷粒面积糙米重、单位谷粒面积谷壳重的差异较大,谷壳面积的差异较小。用单位谷粒面积的谷壳重作为谷壳充实程度的指标,用单位谷粒面积所形成的糙米重作为籽粒接受灌浆物质能力的指标,成熟期单位谷粒面积的谷壳重与单位谷粒面积所形成的糙米重呈极显著正相关。研究结果表明,增加谷壳的充实程度有利于提高籽粒接受灌浆物质的能力。

This study investigated the effect of rice hull plumpness on grain capability of substances.Using four rice cultivars,Yanjing 2(japonica),Yangdao 4(indica),Shanyou 63(intervarietal hybrid)and 02428/Minghui 63(intersubspecies hybrid)as materials,grains were divided into different specific gravity.Brown rice weight,hull weight,brown rice weight per unit grain area,hull weight per unit grain area of different specific gravity varied widely,however,hull area per grain varied little.Brown rice weight per unit gr...