期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Study on the Nutrition Characteristics of Different K Use Efficiency Cotton Genotypes to K Deficiency Stress 被引量:9
1
作者 JIANG Cun-cang CHEN Fang +4 位作者 GAO Xiang-zhao LU Jian-wei WAN Kai-yuan NIAN Fu-zhao WANG Yun-hua 《Agricultural Sciences in China》 CAS CSCD 2008年第6期740-745,共6页
To study the mechanism of plant K use efficiency, both K high and low use efficiency cotton genotypes, 103 and 122, respectively, were selected from 86 cotton cultivars (Gossypium hirsutum L.). The research was cond... To study the mechanism of plant K use efficiency, both K high and low use efficiency cotton genotypes, 103 and 122, respectively, were selected from 86 cotton cultivars (Gossypium hirsutum L.). The research was conducted using pot experiment for planting cotton on without K (0.0 g kg-1 soil) and with K (0.4 g kg-1 soil) treatments in 2005. Experimental result showed that, with K deficiency stress, genotype 103 grew much better than genotype 122 except that its lower leaves showed the symptoms of K deficiency, whereas all the leaves of genotype 122 showed the symptoms of K deficiency. Root dry matter weights of treatments for genotype 103 with and without K application were 1.07 and 1.25 times of genotype 122. It indicated that the root system of genotype 103 was well developed and has better nutrition uptake capability than that of genotype 122. The result also showed that the cotton shoots of genotype 103 were 1.07 and 1.13 times over genotype 122 on treatments of with and without K application. It indicated that genotype 103 has stronger transport organs. In genotype 103, plants, dry matter, and potassium were mainly transported to cotton bolls. The boll dry weight of genotype 103 was 2.58 times in without K treatment and 1.90 times in with K treatment over genotype 122. The potassium accumulation in bolls of genotype 122 was only 49.3% of that in genotype 103. Potassium accumulation in the other organs of genotype 103 was relatively low compared with in bolls. This indicated that the distribution of K and organic matter in genotype 103 was more efficient than genotype 122. The main differences between high K efficiency cotton genotype 103 and low K efficiency genotype 122 lie in their potassium nutrition and organic matter using efficiency on uptake, transportation, accumulation, distribution, and utilization. 展开更多
关键词 cotton (Gossypium hirsutum L.) potassium use efficiency GENOTYPE uptake capability distribution ability
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部