复合盐碱胁迫对不同谷子品种萌发期的影响及耐盐碱品种筛选  

Effects of Compound Saline-Alkali Stress on Germination Period of Different Foxtail Millet Varieties and Screening of Saline-Alkali Tolerance Varieties

作　　者：刘莹 尹泽群 吴柏辰 徐明丽 刘畅 石慧姝 庞博 苗兴芬[1,2] Liu Ying;Yin Zequn;Wu Baichen;Xu Mingli;Liu Chang;Shi Huishu;Pang Bo;Miao Xingfen(Agricultural College of Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China;Institute of Crop Resources,Heilongjiang Academy of Agricultural Sciences,Daqing 163319,Heilongjiang,China)

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319 [2]黑龙江省农业科学院作物资源研究所,黑龙江大庆163319

出　　处：《作物杂志》2024年第3期207-215,共9页Crops

基　　金：黑龙江省博士后启动项目(LRB13127567);黑龙江省重点研发项目(GA21B009)。

摘　　要：为了探究复合盐碱胁迫对不同谷子品种萌发的影响,对100份谷子品种进行研究,选定2种中性盐(Na_(2)SO_(4),NaCl)和2种碱性盐(NaHCO_(3),Na_(2)CO_(3)),按4:1:4:1(摩尔比)混合,随机选取5个供试品种进行耐盐碱性的浓度筛选,设0、20、40、60、80、100、120、150 mmol/L共8个处理,研究谷子品种萌发期盐碱胁迫条件下发芽率以及对根、芽的影响。结果表明,80 mmol/L的盐碱溶液是筛选谷子萌发期耐盐碱的最适浓度;在80 mmol/L盐碱浓度下,对100份谷子品种萌发期的耐盐碱性进行了综合评价,结果显示,各品种指标之间差异达到显著或极显著水平,各性状的变异系数从小到大为相对发芽率、相对发芽指数、相对芽长、相对芽干重、相对芽鲜重、相对发芽势、相对根长、相对根鲜重、相对根干重;根据综合评分值(D值),将100份谷子品种分为4个耐盐碱级别,分别为极耐盐碱品种8份、耐盐碱品种11份、中度耐盐碱品种62份、敏感盐碱品种19份。In order to explore the influence of compound saline-alkali stress on the germination of different foxtail millet varieties,100 foxtail millet varieties were studied.Two neutral salts(Na_(2)SO_(4),NaCl)and two alkaline salts(NaHCO_(3),Na_(2)CO_(3))were selected and mixed according to the molar ratio of 4:1:4:1 and five tested varieties were randomly selected for salt-alkali tolerance concentration screening,eight treatments(0,20,40,60,80,100,120 and 150 mmol/L)were set.The germination rate of foxtail millet varieties under saline-alkali stress during germination stage and its influence on roots and buds were studied.The results showed that 80 mmol/L saline-alkali solution was the optimum concentration for screening the salt-alkali tolerance of foxtail millet during germination.The saline-alkali tolerance of 100 foxtail millet varieties at germination stage were comprehensively evaluated at 80 mmol/L saline-alkali concentration.The results showed that the differences among varieties reached significant and extremely significant levels,and the coefficient of variation of each characteristic was from small to large:relative germination rate,relative germination index,relative bud length,relative bud dry weight,relative bud fresh weight,relative germination potential,relative root length,relative root fresh weight and relative root dry weight.According to the comprehensive score value(D),100 foxtail millet varieties were divided into four grades of saline-alkali tolerance,including eight varieties with extreme saline-alkali tolerance,11 varieties with saline-alkali tolerance,62 varieties with moderate saline-alkali tolerance and 19 saline-alkali sensitive varieties.

关 键 词：谷子 盐碱胁迫 萌发期 品种筛选 

分 类 号：S515[农业科学—作物学]