短日照对不同叶龄红小豆幼苗的诱导效应  

Effect of Short-day Photoperiod on Adzuki Bean(Phaseout angularis)Seedlings at Different Leaf Ages

作　　者：尹宝重[1] 陶晡[1] 张月辰[2] 

机构地区：[1]河北农业大学植物保护学院,河北保定071001 [2]河北农业大学农学院/河北省作物生长调控重点实验室,河北保定071001

出　　处：《作物学报》2011年第8期1475-1484,共10页Acta Agronomica Sinica

基　　金：河北省自然科学基金项目(C2009000526);河北省科技攻关项目(038201790D)课题资助

摘　　要：以中晚熟红小豆品种冀红小豆4号为材料,于2006—2008年在河北农业大学植物标本园,设置自然光周期(CK)、12h光周期处理,零叶龄(LF)～四叶龄幼苗5个处理,以CK作为对照,从对生真叶出土开始观测不同处理的生育进程、成花及生理指标,成熟时测定干物质积累、产量组分及小区产量。结果表明,短日照降低株高、茎粗并减少主茎节数,促进分枝形成,对较小叶龄植株作用明显;短日照诱导抑制植株各部位干物质的积累量,主要在真叶至第1复叶展平期间影响显著,其中对生物产量和经济产量影响最大;短日照影响生育进程,二叶龄之前的影响较为明显,不利于产量的形成。短日诱导明显缩短生长前期,另外三叶龄短日照处理可显著提高百粒重;短日照明显增强超氧化物酶(SOD)与过氧化物酶(POD)活性,增加游离氨基酸(SAA)、可溶性蛋白(SPRO)、赤霉素(GA)、细胞分裂素(CTK)与脱落酸(ABA)含量,并在一定程度上提高GA/ABA。短日照诱导对不同叶龄红小豆生长、生理及产量所产生的影响,整体趋势是生长前期效应相对显著。The experiment was carried out at sample nursery of Hebei Agricultural University in 2006-2008. Adzuki bean Jihong 4, a medium and late maturing variety, was treated with two photoperiods [natural light （control） and 12-hour light] at the zero leaf age （LF） to four leaf age. When the first two leaves appeared, we started to determine the physiological indicators at five-leaf age. At the maturity stage, we investigated agronomic traits, dry matter accumulation, yield components, and plots yield. The result showed that the short-day photoperiod can deccrease plant height, stem diameter, node number, and promote branch formation, and the effect on plants at younger leaf age was significant;short-day photoperiod also evidently decreased dry matter accumulation in different organs of plant from the first two leaves appearing to the first compound leaf bully expanded, especially for biomass and grain yield;short-day photoperiod shortened significantly the growth process before the two-leaf age, resulting in yield reduction but significantly increasing 100-seeds weight at three-leaf age;short day photoperiod raised contents of superoxide dismutase （SOD） and peroxidase dismutase （POD） activiting, free amino acid （SAA）, soluble protein （SPRO）, gibberellin （GA）,cytokinin （CTK）,abscisic acid （ABA）, and GA/ABA as well as dismutase significantly. There was significant difference in growth, physiological and yield for adzukibean at different leaf ages between different development periods, showing that the effect is more significant in the early development period, and at younger leaf age.

关 键 词：红小豆 苗期 叶龄 短日照 效应 

分 类 号：S521[农业科学—作物学]