CAJ | 학술논문

为了研究花后干旱对春小麦籽粒淀粉形成影响的机理，缓减春小麦花后干旱危害，以宁夏春小麦宁春4号和宁春47号为供试材料，在盆栽条件下，人工模拟花后干旱，测定了春小麦籽粒淀粉含量及淀粉形成关键酶活性。结果表明：花后干旱胁迫显著降低春小麦籽粒淀粉含量，使宁春4号和宁春47号的直链淀粉下降9．78％～30．07％，支链淀粉下降9．02％～19．92％，淀粉总含量下降9．25％～22．82％；干旱使两品种的淀粉形成关键酶（ADPG－PPase、UDPG－PPase、SSS和SBE ）活性下降，从而对淀粉品质产生影响。因此，应采取相应栽培技术缓解花后干旱危害，提高春小麦产量和品质。
위료연구화후간한대춘소맥자립정분형성영향적궤리，완감춘소맥화후간한위해，이저하춘소맥저춘4호화저춘47호위공시재료，재분재조건하，인공모의화후간한，측정료춘소맥자립정분함량급정분형성관건매활성。결과표명：화후간한협박현저강저춘소맥자립정분함량，사저춘4호화저춘47호적직련정분하강9．78％～30．07％，지련정분하강9．02％～19．92％，정분총함량하강9．25％～22．82％；간한사량품충적정분형성관건매（ADPG－PPase、UDPG－PPase、SSS화SBE ）활성하강，종이대정분품질산생영향。인차，응채취상응재배기술완해화후간한위해，제고춘소맥산량화품질。
To study the effects of drought on grain starch contents and activities of related key enzymes and minimize damages caused by drought after anthesis in spring wheat ,two spring wheat cultivars ,Ningchun 4 and Ningchun 47 , were used in a pot experiment by manipulating the post-anthesis soil moisture .The results showed that the starch contents of Ningchun 4 and Ningchun 47 became decreased significantly under drought stress after anthesis .The amylase ,amy-lopectin ,and total starch contents were decreased by 9 .78% ~30 .07% ,9 .02% ~19 .92% and 9 .25% ~22 .82% , respectively .The activities of ADPG-PPase ,UDPG-PPase ,SSS ,SBE and the quality of spring wheat grains were al-so decreased .Therefore ,implementation of proper cultivation techniques remitting damages from drought after anthesis could improve the yield and the quality of spring wheat .