本文關(guān)鍵詞： 玉米 逆境萌發(fā) 種子活力　出處：《沈陽農(nóng)業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：本試驗選取了 62個已經(jīng)在市場上推廣的玉米樣品作為試驗材料,分別對這些試驗的樣品進行了田間的出苗試驗、發(fā)芽率測定試驗、以及深播的試驗、低溫試驗、干旱試驗、鹽脅迫試驗、人工老化試驗、貯藏試驗這一系列的逆境試驗,分析各個逆境條件下種子的活力指標(biāo)的情況,并通過相關(guān)性分析的方法分析個各逆境條件下各指標(biāo)間的相關(guān)性,再通過因子分析法分析所選取試驗樣品活力的綜合情況,主要的研究結(jié)果如下(在試驗結(jié)果分析中設(shè)定80%為室內(nèi)試驗的統(tǒng)一標(biāo)準(zhǔn),達到80%則說明活力指標(biāo)良好):1.發(fā)芽率測定試驗結(jié)果:所選取的試驗樣品的發(fā)芽勢在24%-99%之間;樣品的發(fā)芽率在65%-100%之間,而且發(fā)芽率高的樣品占絕大多數(shù),有97%的玉米品種種子達到標(biāo)準(zhǔn),只有四育18、吉單50的發(fā)芽率很低。2.田間出苗試驗結(jié)果:于去年4月末進行的田間出苗試驗結(jié)果顯示除了四育18(該樣品在試驗進行中所表現(xiàn)出的各項活力指標(biāo)情況表明已經(jīng)不適合進行播種)其他樣品的出苗率在都57%-96%之間,其中達到標(biāo)準(zhǔn)(85%)的所占比例為53%,但在試驗中遼單502、吉單50、遼單588、丹玉305、吉單602、東亞72#、沈玉21(紅袋)、鐵研818這些樣品出苗情況比較差,未達到70%。3.逆境試驗結(jié)果:試驗結(jié)果表明,40%的試驗樣品在深播條件下的逆境萌發(fā)能力是達到標(biāo)準(zhǔn)的;87%的試驗樣品低溫下的逆境萌發(fā)能力是達到標(biāo)準(zhǔn)的;61%的試驗樣品在干旱下的逆境萌發(fā)能力是達到標(biāo)準(zhǔn)的;85%的試驗樣品在鹽脅迫的下的逆境萌發(fā)能力是達到標(biāo)準(zhǔn)的;56%的試驗樣品人工老化的逆境萌發(fā)能力是達到標(biāo)準(zhǔn)的;68%的試驗樣品在經(jīng)過貯藏的逆境萌發(fā)能力是達到標(biāo)準(zhǔn)的;逆境萌發(fā)能力達到標(biāo)準(zhǔn),種子活力相對較高。4.相關(guān)性分析結(jié)果:各個逆境條件下的活力指標(biāo)呈現(xiàn)出一定的相關(guān)性,說明單一逆境萌發(fā)能力指標(biāo)不能完全說明種子活力情況;馬齒型玉米種子的逆境活力受耐貯藏性以及耐深播性的影響顯著;半馬齒型玉米種子的逆境活力表現(xiàn)受老化的影響顯著。5.種子活力綜合分析結(jié)果:利用spss19對所選取的樣品在不同逆境條件下的發(fā)芽率進行主成分分析從而獲得種子活力的綜合排序,雖然綜合情況好的樣品一些單一指標(biāo)有可能會被覆蓋,但是可以在整體情況上更了解各個樣品的總體抗逆情況。
[Abstract]:In this experiment, 62 maize samples which have already been popularized in the market were selected as experimental materials. The seedling emergence test, germination rate test and deep seeding test were carried out on these test samples in the field. Low temperature test, drought test, salt stress test, artificial aging test and storage test are a series of stress tests to analyze the vigor index of seeds under different stress conditions. And through the method of correlation analysis to analyze the correlation between each index under various stress conditions, and then through factor analysis to analyze the comprehensive situation of the selected test sample vitality. The main results of the study are as follows (80% is set as the unified standard for indoor tests in the analysis of test results. The test results showed that the germination rate of the selected sample was between 24% and 99%. The germination rate of the samples ranged from 65% to 100%, and the samples with high germination rate accounted for most of the samples. 97% of the maize varieties met the standard, with only four breeding 18. The germination rate of Jidan 50 is very low. 2. The result of field seedling emergence trial: in late April last year, the result of field seedling emergence test showed that except for four breeding 18 (. The vigor index of the sample in the experiment shows that it is no longer suitable for seeding.) the emergence rate of other samples is between 57% and 96%. The proportion to reach the standard is 53, but in the experiment, Liaodan 502, Jidan 50, Liaodan 588, Danyu 305, Jidan 602, East Asian 72 #and Shen Yu21 (Red bag). The seedling emergence of Tieyan 818 was not up to 70.3.The results of stress test showed that 40% of the samples had the ability to germinate under the condition of deep sowing. The germinating ability of 87% samples under low temperature was up to the standard. The germinating ability of 61% samples under drought stress was up to the standard. The germinating ability of 85% samples under salt stress was up to the standard. The stress germination ability of 56% samples was up to the standard. The germinating ability of 68% samples was up to the standard after storage. The ability of germination reached the standard and the seed vigor was relatively high. 4. The results of correlation analysis showed that there was a certain correlation between the indexes of vigor under various stress conditions. The results showed that the single index of germination ability could not completely explain the vigor of seeds. The stress vigor of horse-toothed maize seeds was significantly affected by storage tolerance and deep sowing tolerance. Stress vigor of semi-horse-toothed maize seeds was significantly affected by aging. 5. The results of comprehensive analysis of seed vigor:. The germination rate of the selected samples under different stress conditions was analyzed by principal component analysis (spss19) to obtain the comprehensive ranking of seed vigor. Although some single indicators may be covered for the well-integrated samples, the overall stress resistance of each sample can be better understood in the overall situation.
【學(xué)位授予單位】：沈陽農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：S513

【相似文獻】

相關(guān)期刊論文 前6條

1 陳雄庭，江柏萱;卡杜拉咖啡果實成熟度對種子萌發(fā)能力的影響[J];世界熱帶農(nóng)業(yè)信息;1996年11期

2 阿繼凱;李惠山;董匯澤;;高壓靜電場對大黃種子萌發(fā)能力的影響[J];青海農(nóng)林科技;2008年04期

3 祖炬雄;貯藏中藥材種子三忌[J];湖南農(nóng)業(yè);1994年12期

4 張秀玲;;鹽對夏至草種子萌發(fā)以及鹽脅迫解除后種子萌發(fā)能力恢復(fù)的影響[J];植物生理學(xué)通訊;2008年03期

5 楊世露;;生長素對紫皮石斛種苗萌發(fā)能力的影響[J];農(nóng)業(yè)與技術(shù);2013年08期

6 張衛(wèi)華;董匯澤;;超聲波和赤霉素對川西獐牙菜種子萌發(fā)能力的影響[J];植物生理學(xué)通訊;2009年07期

相關(guān)會議論文 前1條

1 王偉青;宋松泉;;成熟脫水在種子萌發(fā)能力,抗病菌和幼苗活力建成中的作用研究[A];生態(tài)文明建設(shè)中的植物學(xué)：現(xiàn)在與未來——中國植物學(xué)會第十五屆會員代表大會暨八十周年學(xué)術(shù)年會論文集——第4分會場：資源植物學(xué)[C];2013年

相關(guān)碩士學(xué)位論文 前1條

1 任鳳姣;玉米種子活力與抗逆萌發(fā)能力關(guān)系的研究[D];沈陽農(nóng)業(yè)大學(xué);2017年

，

本文編號：1469491