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        外源性5-氨基乙酰丙酸對(duì)NaCl脅迫下綠豆萌發(fā)及幼苗生長(zhǎng)的影響

        2020-11-23 07:38:38趙金璽尤穎姜?jiǎng)P陽(yáng)張嘉祥張梅
        湖北農(nóng)業(yè)科學(xué) 2020年18期
        關(guān)鍵詞:生長(zhǎng)影響

        趙金璽 尤穎 姜?jiǎng)P陽(yáng) 張嘉祥 張梅

        摘要:采用單因素試驗(yàn)方法,以綠豆作為試材,150 mg/L濃度的NaCl模擬鹽脅迫,研究不同濃度的外源5-氨基乙酰丙酸對(duì)鹽脅迫下綠豆種子萌發(fā)及幼苗生長(zhǎng)的影響。不同濃度的5-氨基乙酰丙酸處理對(duì)NaCl脅迫下綠豆的萌發(fā)及幼苗生長(zhǎng)呈低濃度促進(jìn),高濃度抑制的作用;綠豆的發(fā)芽率和發(fā)芽勢(shì)隨著處理濃度的增大先升高后降低,分別在50、150 mg/L處理濃度時(shí)達(dá)到最高,在達(dá)到250 mg/L處理濃度時(shí),發(fā)芽率和發(fā)芽勢(shì)降至最低,呈顯著抑制作用;幼苗期的綠豆葉面積和根長(zhǎng)隨著處理濃度增大,先升高后降低,處理濃度達(dá)到100 mg/L時(shí)二者達(dá)到最大值;隨著5-氨基乙酰丙酸處理濃度的增加,綠豆幼苗葉片中丙二醛(MDA)含量呈先降低后升高的趨勢(shì),在處理濃度達(dá)到150 mg/L時(shí)最低;脯氨酸和可溶性糖含量呈先升高后降低的趨勢(shì),分別在處理濃度達(dá)到150、100 mg/L時(shí)達(dá)到最高,說(shuō)明5-氨基乙酰丙酸對(duì)綠豆幼苗抗逆性具有顯著影響。施用外源性5-氨基乙酰丙酸對(duì)NaCl脅迫下綠豆的萌發(fā)最佳施用濃度為100 mg/L左右,對(duì)NaCl脅迫下綠豆的幼苗生長(zhǎng)最佳施用濃度為150 mg/L。

        關(guān)鍵詞:5-氨基乙酰丙酸;鹽脅迫;綠豆;抗逆性

        中圖分類(lèi)號(hào):S522? ? ? ? ?文獻(xiàn)標(biāo)識(shí)碼:A

        文章編號(hào):0439-8114(2020)18-0021-04

        DOI:10.14088/j.cnki.issn0439-8114.2020.18.005

        Effects of exogenous 5-aminolevulinic acid on the germination

        and seedling growth of mung bean under NaCl stress

        ZHAO Jin-xi, YOU Ying, JIANG Kai-yang, ZHANG Jia-xiang, ZHANG Mei

        (Yantai Institute, China Agricultural University, Yantai? 264670, Shandong, China)

        Abstract: The effects of different concentrations of exogenous 5-aminolevulinic acid on seed germination and seedling growth ofmung bean under salt stress were studied by using mung bean as test material and 150 mg/L concentration NaCl as simulated salt stress. The results showed that different concentrations of 5-aminolevulinic acid promoted the germination and seedling growth of mung bean at low concentration and inhibited at high concentration under NaCl stress, the germination rate and germination potential of green beans increased first and then decreased with the increase of treatment concentration, reaching the highest concentration of 50 mg/L and 150 mg/L respectively. Exogenous 5-aminolevulinic acid played a significant inhibitory role when the concentration reached 250 mg/L. The leaf area and root length of mung bean at seedling stage increased first and then decreased with the increase of treatment concentration. When the treatment concentration reached 100 mg/L, both reached the maximum value. With the increase of 5-aminolevulinic acid concentration, malondialdehyde (MDA) decreased at first and then increased, and reached the lowest when the treatment concentration reached 150 mg/L. The content of proline and soluble sugar increased first and then decreased, and reached the highest when the treatment concentration reached 150 mg/L and 100 mg/L, respectively. The results showed that 5-aminolevulinic acid had a significant effect on the stress resistance of mung bean seedlings. The optimal concentration of exogenous 5-aminolevulinic acid on mung bean germination under NaCl stress was about 100 mg/L, and the optimal concentration for seedling growth of mung bean under NaCl stress was 150 mg/L.

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        [9] WATANABE K, TANAKA T, HOTTA Y, et al. Improving salt tolerance of cotton seedlings with 5-aminolevulinic acid[J]. Plant Growth Regul,2000,32:99-103.

        [10] 趙路穎. 5-氨基乙酰丙酸和鈣離子信號(hào)協(xié)同調(diào)控花生耐鹽性的機(jī)制研究[D].濟(jì)南:山東大學(xué),2018.

        [11] 趙寶龍,劉 鵬,王文靜,等.5-氨基乙酰丙酸(ALA)對(duì)鹽脅迫下葡萄葉片中AsA-GSH循環(huán)的影響[J].植物生理學(xué)報(bào),2015,51(3):385-390.

        [12] 汪良駒,姜衛(wèi)兵,章 鎮(zhèn),等.5-氨基乙酰丙酸的生物合成和生理活性及其在農(nóng)業(yè)中的潛在應(yīng)用[J].植物生理學(xué)通訊,2003(3):185-192.

        [13] 孟長(zhǎng)軍,杜喜春,張 旸.5-氨基乙酰丙酸對(duì)喜樹(shù)幼苗鹽害緩解的生理機(jī)制研究[J].熱帶亞熱帶植物學(xué)報(bào),2019,27(2):164-170.

        [14] 武 玥.外源5-氨基乙酰丙酸(ALA)緩解黃瓜幼苗鹽脅迫的效果及機(jī)理研究[D].蘭州:甘肅農(nóng)業(yè)大學(xué),2018.

        [15] 史海莉.外源ALA對(duì)葡萄砧木海水脅迫緩解效應(yīng)機(jī)理研究[D].杭州:浙江農(nóng)林大學(xué),2018.

        [16] 司玉君,曹其聰,陳 雪.高產(chǎn)優(yōu)質(zhì)綠豆品種濰綠9號(hào)栽培技術(shù)[J].種子世界,2016(5):63.

        [17] 謝 冰,饒?jiān)谏?,向金友,?蒽酮比色法測(cè)定煙葉中可溶性糖的不確定度評(píng)定[J].中國(guó)測(cè)試,2015,41(S1):10-13.

        [18] 董榮榮,劉玉梅,李樹(shù)珍,等.根施5-氨基乙酰丙酸對(duì)早春茬日光溫室黃瓜生長(zhǎng)、產(chǎn)量及品質(zhì)的影響[J].中國(guó)農(nóng)業(yè)大學(xué)學(xué)報(bào),2019,24(8):41-47.

        [19] 張曉宏,郭 剛,王著龍,等.外源5-氨基乙酰丙酸對(duì)加工番茄葉光合色素及果實(shí)產(chǎn)量品質(zhì)的影響[J].新疆農(nóng)業(yè)科學(xué),2018,55(8):1436-1443.

        [20] 康 瑯,程 云,汪良駒.5-氨基乙酰丙酸對(duì)秋冬季大棚西瓜葉片光合作用及抗氧化酶活性的影響[J].西北植物學(xué)報(bào),2006,26(11):2297-2301.

        [21] 李會(huì)云,郭修武.鹽脅迫對(duì)葡萄砧木葉片保護(hù)酶活性和丙二醛含量的影響[J].果樹(shù)學(xué)報(bào),2008,25(2):240-243.

        [22] 李陽(yáng)陽(yáng).葉面噴施5-氨基乙酰丙酸對(duì)葡萄光合作用及蔗糖轉(zhuǎn)化酶基因表達(dá)的影響[D].陜西楊凌:西北農(nóng)林科技大學(xué),2018.

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