可将保卫细胞气孔长度与保卫细胞叶绿体数两个气孔性状相结合，作为饲用甜菜多倍体育种初期的筛选鉴定指标。
Taking the diploid and tetraploid cultivars of fodder beet as experimental materials, the relationship between chromosome ploidy and leaf stomatal characters was studied.
上述结果可作为种质筛选和抗性鉴定的参考指标。
These results could be used as physiological indexes for germplasm selection and resistance breeding in sweet potato.
在苗期筛选出了叶龄、MDA两个耐冷性鉴定指标，在开花期筛选出了光合速率和SOD活性两个耐冷性鉴定指标。
Screened leaf age and MDA content identification indexes of cold tolerance in seeding stage, photosynthetic rate and SOD activity were screened in flowering stage.
应用推荐