



摘要 [目的]探究5-氨基乙酰丙酸(5-ALA)浸種對澇漬脅迫下小麥幼苗生長的影響。[方法]以紅地95小麥品種為試驗(yàn)材料,利用不同質(zhì)量濃度梯度的5-ALA對小麥進(jìn)行浸種處理,采用“浸漬池”法模擬澇漬脅迫,測量小麥苗長、根長及鮮重,評價外源5-ALA在澇漬脅迫下對于小麥幼苗生長形態(tài)的影響;同時測定葉綠素(Chl)、可溶性糖(SS)以及丙二醛(MDA)等相關(guān)物質(zhì)含量,研究其在澇漬脅迫下對于小麥幼苗生理代謝的影響。[結(jié)果]隨著外源5-ALA質(zhì)量濃度增大,小麥的生長活力先升高后下降。適宜濃度的5-ALA浸種使小麥在澇漬脅迫下苗長、葉綠素及可溶性糖的含量較CK組升高,降低了小麥組織中丙二醛含量,提高了小麥的抗?jié)承裕欢邼舛?-ALA則對小麥生長起抑制作用。[結(jié)論]最佳處理質(zhì)量濃度為50、80、100 mg/L處理下對小麥幼苗生長起抑制作用。
關(guān)鍵詞 5-氨基乙酰丙酸;澇漬脅迫;小麥;抗?jié)承?/p>
中圖分類號 S512.1 文獻(xiàn)標(biāo)識碼 A 文章編號 0517-6611(2024)19-0030-03
doi:10.3969/j.issn.0517-6611.2024.19.006
開放科學(xué)(資源服務(wù))標(biāo)識碼(OSID):
Effect of Exogenous 5-ALA on Growth of Wheat Seedling Under Waterlogging Stress
GE Cai-cai,Lü Xiang-hua,SHEN Ming-yue et al
(Qingdao Academy of Agricultural Sciences,Qingdao,Shandong 266100)
Abstract [Objective]To investigate the effects of 5-aminolevulinic acid (5-ALA) soaking on the growth of wheat seedling under waterlogging stress.[Method]Hongdi 95 was used as experimental material and 5-ALA with different concentration gradients was used to soak wheat seeds.The soaking pond method was used to simulate waterlogging stress,and the effects of exogenous 5-ALA on the growth morphology of wheat seedlings under waterlogging stress were evaluated by measuring the length and fresh weight of seedlings and roots.The contents of chlorophyll (Chl),soluble sugar (SS) and malondialdehyde (MDA) on wheat seedlings under waterlogging stress were measured.[Result]With the increasing of exogenous 5-ALA concentration,the growth vigor of wheat seedling firstly increased and then decreased.Seed soaking with 5-ALA at suitable concentration accelerated seedling growth,increased chlorophyll and soluble sugar,decreased MDA in wheat tissues and improved waterlogging resistance of wheat.But 5-ALA in high concentration inhibited wheat growth.[Conclusion]The growth of wheat seedling was inhibited by the concentrations of 50,80 and 100 mg/L 5-ALA.
Key words 5-aminolevulinic acid;Waterlogging stress;Wheat;Waterlogging resistance
基金項(xiàng)目 青島市科技惠民示范引導(dǎo)專項(xiàng)(22-3-7-xdny-4-nsh)。
作者簡介 葛猜猜(1997—),女,山東臨沂人,碩士研究生,研究方向:農(nóng)業(yè)經(jīng)濟(jì)。*通信作者,高級農(nóng)藝師,碩士,從事農(nóng)業(yè)生產(chǎn)試驗(yàn)研究及示范推廣。
收稿日期 2023-09-18
由于地表水滯留或地下水浸漬侵害,土壤實(shí)際含水量超過田間正常持水量,引起土壤理化性質(zhì)惡化、作物生長受到抑制甚至減產(chǎn)的現(xiàn)象稱為澇漬災(zāi)害。澇漬脅迫使土壤氣相部分減少,致使作物地下部缺氧,間接影響地上部生理代謝活力, 降低作物的產(chǎn)量與品質(zhì)。近年來,我國澇漬災(zāi)害頻發(fā),尤其是在黃淮平原、長江中下游等地區(qū),對農(nóng)業(yè)生產(chǎn)造成嚴(yán)重?fù)p失[1]?!?br>