摘要
以自然脱叶性状不同的甘蔗栽培品种为材料,测定成熟期甘蔗叶片、叶鞘、叶痕的过氧化物酶(POD)活性,调查甘蔗自然脱叶率,探讨POD活性与自然脱叶率的相关性。结果表明:在甘蔗不同成熟阶段,自然易脱叶型品种云蔗03–194的叶片、叶鞘、叶痕的POD活性均极显著高于难脱叶型品种桂糖02–467和云蔗99–91;在成熟前期、中期和后期,易脱叶型品种云蔗01–1413的叶片、叶鞘的POD活性极显著高于难脱叶型品种桂糖02–467和云蔗99–91;云蔗03–194、云蔗01–1413、桂糖02–467、云蔗99–91的自然脱叶率呈逐渐降低的的趋势;在成熟前期,叶片、叶鞘的POD活性与自然脱叶率呈显著正相关,在成熟中后期,叶片、叶鞘的POD活性与自然脱叶率呈极显著正相关,叶痕POD的活性与自然脱叶率呈显著正相关。
In order to find out the correlation between peroxidase（POD） activity and defoliation rate for sugarcane, peroxidaseactivities of leaf, leaf sheath and leaf scar were measured and natural defoliation rate was investigated for four sugarcane varieties during maturation. The results showed that the POD activities of leaf, leaf sheath and leaf scar in easy-defoliate sugarcane variety CYZ03-194 were very significantly higher than those in difficult-defoliate varieties CGT02-467 and CYZ99-91 in different maturing period. POD activities of leaf, leaf sheath in the easy-defoliate variety CYZ01-1413 were significantly higher than thoes in the difficult-defoliate varieties GT02-467 and CYZ99-91 at the early-middle, middle, and late maturation. During the sugarcane maturity, natural defoliation rates were showed decreased from CYZ03-194, CYZ01-1413, CGT02-467 and CYZ99-91. The significant correlations were found between natural defoliation rate and the POD activity in both leaf and leaf sheath during early-middle maturation, and a very significant correlation during middle-late maturation, and significant correlation in leaf scar during maturation.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第4期345-349,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家自然科学基金项目(31160257)
关键词
甘蔗叶片
成熟期
过氧化物酶活性
自然脱叶率
相关性
sugarcane leaves
maturation
peroxidase（POD） activity
defoliation rate
correlation
