摘要
杉木转化酶活力的研究周国璋，苏梦云关键词杉木，生长速率，转化酶活力在高等植物器官中有转化酶（Ｅ．Ｃ．３．２．１．２６）的存在已有很多报道，早在６０年代不少学者已注意到植物体内的转化酶与细胞伸长有密切关系。Ｈｅｌｌｅｈｕｓｔ等［１］从玉米胚根的研究中发...
This paper reports the study of invertase activity in seed lings of Chinese
fir(Cunninghamia lanceolata ).Results obtained from several determinations indicated that
theenzyme activity was the highest during pH 5.0 and Michaelis constant was 9.3 ×10-2mol。
When the enzyme extracts were stored at 4℃for 24 h,invertase activity in leaves and
shootsdecreased by 55.6 and 86.3 percent,respectively。There were differences of invertase
activityamong the leaf at the top,young leaf and mature leaf.The enzyme was most active in
theleaves at the top of the seedlings and the enzyme activity in mature leaves was the
lowest。They were 11.50,3.11 and 1.57 sucrose hydrazed μmol/h· g of fresh weight
respectively。But invertase activity in young branchlet was five times as high as that in young
leaves on thebranchlet.Higher invertase activity was found in the fast growing clone seedlings
than that inthe slow growing clone seedlings。Correlation between invertase activity and
seedling growthrate,and the possibility of determinating seedling growth potential by level of
invertase activ-ity were discussed.
出处
《林业科学研究》
CSCD
北大核心
1995年第5期586-590,共5页
Forest Research
基金
1994~1996年中国林业科学研究院基金
关键词
杉木
生长速率
转化酶活力
Chinese fir,growth rate, invertase activity
