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选择高光效高产品种是育种工作的目的,但由于进行光合作用测定较为费事,在杂种后代筛选上尚无法直接利用.目前世界各国都在寻找简易间接测定法.日本九州农业试验场吉田智彦等人研究了叶气孔数与产量的相关关系,研究结果表明:叶气孔数与光合作用呈正相关.作者于1978年对甘薯叶气孔数与甘薯产量的关系进行了初步研究,
Selection of high-efficiency and high-yielding varieties of breeding purposes, but because of the determination of photosynthesis is cumbersome, screening of hybrids is still not directly available .At present all countries in the world are looking for a simple indirect assay. Japan Kyushu Agricultural Experimental Yoshida Toshihiko et al The relationship between leaf stomatal number and yield was studied.The results showed that leaf stomatal number was positively correlated with photosynthesis.The author conducted a preliminary study on the relationship between leaf stomatal number and sweet potato yield in 1978,