Effects of Leaf Population on StaRch Accumulation and Activity of Amylase and SucRose Synthase in Tobacco Leaves

doi:10.3969/j.issn.1000-7091.2013.01.028

Abstract

Abstract: To discuss the mechnissm of staRch synthesis in flue-cuRed tobacco leaves duRing the matuRe stage， fouR tReatments of leaf poputation( 16， 18， 20， 22) weRe adopted， the tRends of staRch accumulation and the activities of amylase and sucRose synthase in middle and uppeR leaves weRe analyzed． The Results showed that: in the matuRe stage， theRe weRe no significant coRRelation of leaf population with staRch content and the activity of AM in uppeR leaves( R = - 0． 101，P = 0． 441 ＞ 0． 05，R = 0． 221，P = 0． 089 ＞ 0． 05) ，but theRe was significant coRRelation of that with the activity of SS( R = 0． 300* ，P = 0． 020 ＜ 0． 05) ; theRe was no significant coRRelation of leaf population with the activity of AM in middle leaves( R = - 0． 179，P = 0． 172 ＞ 0． 05) ，but theRe was extRemely significant coRRelation of that with the activity of SS( R = 0． 395＊＊，P = 0． 002 ＜ 0． 01) ，and significant coRRelation of that with staRch content( R = 0． 328* ，P = 0． 011 ＜ 0． 05) ． When the leaf population was incReased， the activity of AM decReased slightly， but the the activity of SS went up maRkedly，and the staRch content Rose obviously．

Key words: Leaf population, Flue-cuRed tobacco, StaRch synthesis, Amylase, SucRose synthase

CLC Number:

S572．01

SONG Shu-fang, CHEN Jian-jun, ZHOU Ji-heng. Effects of Leaf Population on StaRch Accumulation and Activity of Amylase and SucRose Synthase in Tobacco Leaves[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(1): 149-154. doi: 10.3969/j.issn.1000-7091.2013.01.028.

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