JIA "麦类研究"文章精选
本期精选JIA 2019年出版的"麦类研究"相关文章,所有文章在ScienceDirect平台开放获取,点击文章题目可查看全文。
遗传·育种·种质·资源
Genetic mapping and expressivity of a wheat multi-pistil gene in mutant 12TP
小麦突变体12TP中多雌蕊基因的遗传作图和表现度
✺ ZHU Xin-xin, NI Yong-jing, HE Rui-shi, JIANG Yu-mei, LI Qiao-yun, NIU Ji-shan
2012年从一个F2育种群体中获得了1个小麦(Triticum aestivum L.)多雌蕊突变体,命名为12TP(three pistils in one floret)。遗传分析表明1个显性基因位点控制该多雌蕊性状。利用多个源自原始突变体12TP植株的纯合正常株系和纯合多雌蕊株系(近等基因系),通过SSR标记将12TP基因定位在了染色体臂2DL上。有4个SSR标记与12TP基因连锁,顺序为Xcfd233-Xcfd62-12TP-Xwmc41-Xcfd168,它们之间的遗传距离分别为15.85、10.47、2.89和10.37 cM。在7个纯合的12TP株系中‘三雌蕊’性状的平均遗传表现度超过98%;但在F1代杂合的植株中平均遗传表现度约为49%。为此,12TP是一个半显性基因位点,不同于所有以往报告的多雌蕊突变体。突变体12TP是一个新的有用种质,可用于小麦花器官发育研究和高产小麦育种。
↑ 向上滑动查看更多
Cite this article: |
ZHU Xin-xin, NI Yong-jing, HE Rui-shi, JIANG Yu-mei, LI Qiao-yun, NIU Ji-shan. 2019. Genetic mapping and expressivity of a wheat multi-pistil gene in mutant 12TP. Journal of Integrative Agriculture, 18(3): 532–53. |
Characterization of TaCOMT genes associated with stem lignin content in common wheat and development of a gene-specific marker
普通小麦茎秆木质素含量相关基因TaCOMT的克隆及基因特异标记开发
✺ FU Lu-ping, XIAO Yong-gui, YAN Jun, LIU Jin-dong, WEN Wei-e, ZHANG Yong, XIA Xian-chun, HE Zhong-hu
茎秆木质素含量对小麦抗倒性有重要影响,咖啡酸3-O-甲基转移酶(Caffeic acid 3-O-methyltransferase,COMT)是木质素生物合成途径的关键酶。克隆解析TaCOMT并开发基因特异标记对小麦分子育种具有重要意义。本研究同源克隆了分别位于小麦3A、3B和3D染色体上的TaCOMT全长基因组DNA序列,并挖掘到TaCOMT-3B位点的两种等位变异:TaCOMT-3Ba和TaCOMT-3Bb。根据其位于3'-非编码区(3'-untranslated region,3'-UTR)一段222 bp的插入/缺失(insertion/deletion,InDel)变异开发了共显性基因特异标记,命名为TaCOMT-3BM。采用157份小麦品种(系)进行两年两点试验,测定木质素含量并验证标记有效性。结果表明,基因型为TaCOMT-3Ba的材料茎秆木质素含量显著(P<0.01)高于基因型为TaCOMT-3Bb的材料,标记TaCOMT-3BM可有效用于小麦分子育种。
↑ 向上滑动查看更多
Cite this article: |
FU Lu-ping, XIAO Yong-gui, YAN Jun, LIU Jin-dong, WEN Wei-e, ZHANG Yong, XIA Xian-chun, HE Zhong-hu. 2019. Characterization of TaCOMT genes associated with stem lignin content in common wheat and development of a gene-specific marker. Journal of Integrative Agriculture, 18(5): 939-947. |
Reactive oxygen species are involved in cell death in wheat roots against powdery mildew
✺ LI Cheng-yang, ZHANG Nan, GUAN Bin, ZHOU Zhu-qing, MEI Fang-zhu
小麦白粉病菌侵染小麦叶片后,能够诱导不定根中细胞的死亡。活性氧(ROS)在响应植物的生物胁迫中起关键作用。为了研究接种后小麦根中ROS的参与程度和细胞死亡程度,分析了2株对白粉病真菌敏感的(华麦8号)和有抗性(神麦8号)的小麦品种中ROS水平及根系细胞结构。在白粉病菌接种后第18天,只有华麦8号的叶发生病变,但是两个品种的根中均发生细胞死亡。华麦8号根中有过多的ROS积累,这与根细胞死亡程度的增加有关。但在神麦8号中,几乎没有ROS积累,同时根细胞死亡程度较弱。此外,小麦根部清除ROS的基因(MnSOD和CAT)表达水平的分子研究表明,小麦叶片接种白粉病菌后这些基因的表达量下调。华麦8号和神麦8号对H2O2和O2-·的亚细胞定位的差异与两个小麦品种中超氧化物歧化酶和过氧化氢酶编码基因的不同表达相对应。这些结果表明,ROS参与了白粉病真菌诱导小麦根部细胞死亡的过程。
↑ 向上滑动查看更多Cite this article: |
LI Cheng-yang, ZHANG Nan, GUAN Bin, ZHOU Zhu-qing, MEI Fang-zhu. 2019. Reactive oxygen species are involved in cell death in wheat roots against powdery mildew. Journal of Integrative Agriculture, 18(9): 1961-1970. |
Application of virus-induced gene silencing for identification of FHB resistant genes
BSMV诱导基因沉默技术在小麦抗赤霉病基因鉴定中的应用
✺ FAN Yan-hui, HOU Bing-qian, SU Pei-sen, WU Hong-yan, WANG Gui-ping, KONG Ling-rang, MA Xin, WANG Hong-wei病毒诱导的基因沉默(VIGS)技术鉴定基因功能具有实验周期短,宿主广泛等优点。本研究探索了利用BSMV-VIGS系统在小麦赤霉病(FHB)抗性研究中的可行性和有效性。在挑旗期将重组BSMV接种旗叶,在穗部成功沉默的最大效率达到78%。在接种BSMV后会引起小麦的FHB抗性降低,为减小BSMV-VIGS系统对小麦FHB抗性评价的影响,鉴定了不同的禾谷镰刀菌菌株毒力,筛选出SF06-1菌株用于小麦FHB抗性评估。利用BSMV-VIGS系统分别沉默参与茉莉酸信号路径基因TaAOC, TaAOS和TaOPR3,结果表明三个基因均正向调控FHB抗性。TaAOS-RNAi转基因小麦的穗部感FHB严重,同样也证明TaAOS参与小麦对FHB的抗性。
↑ 向上滑动查看更多Cite this article: |
FAN Yan-hui, HOU Bing-qian, SU Pei-sen, WU Hong-yan, WANG Gui-ping, KONG Ling-rang, MA Xin, WANG Hong-wei. 2019. Application of virus-induced gene silencing for identification of FHB resistant genes. Journal of Integrative Agriculture, 18(10): 2183-2192. |
TaSAUR78 enhances multiple plant abiotic stress responses by regulating the interacting gene TaVDAC1
TaSAUR78通过与TaVDAC1基因相互作用提高植物多种抗逆能力
✺ GUO Yuan, XU Chang-bing, SUN Xian-jun, HU Zheng, FAN Shou-jin, JIANG Qi-yan, ZHANG Hui
受非生物逆境调控的SAURs (SMALL AUXIN-UP RNAs)在植物中具有多种生物学功能。但其在非生物逆境胁迫中的作用却还不清楚。本研究中,首先克隆了小麦中一个SARU基因,TaSAUR78。我们发现TaSAUR78与TaVDAC1 (voltage-dependent anion channel)相互作用。高盐胁迫条件下TaSAUR78下调表达而TaVDAC1上调表达。TaSAUR78在拟南芥中过表达提高了转基因植物对盐胁迫、旱胁迫及低温胁迫的耐受能力,并减少了盐胁迫条件下植物体内ROS的积累。而过表达TaVDAC1提高了植物的耐盐能力,但降低了植物对干旱及低温胁迫的耐受能力,且转基因植物中ROS积累增加。这些结果表明TaSAUR78可能通过调控TaVDAC1基因表达提高植物抗逆能力。本研究为多种非生物逆境条件下TaSAUR78 和TaVDAC1的功能研究提供信息,并为这些基因将来应用于作物抗逆育种提供基础。
↑ 向上滑动查看更多Cite this article: |
GUO Yuan, XU Chang-bing, SUN Xian-jun, HU Zheng, FAN Shou-jin, JIANG Qi-yan, ZHANG Hui. 2019. TaSAUR78 enhances multiple plant abiotic stress responses by regulating the interacting gene TaVDAC1. Journal of Integrative Agriculture, 18(12): 2682-2690. |
小麦细胞分裂素响应调节因子基因TaARR1调控植株氮素吸收与同化进而增强植株抵御低氮胁迫能力
✺ YANG Meng-ya, CHEN Jia-qi, TIAN He-yang, NI Chen-yang, XIAO Kai氮信号转导组分通过介导低氮信号传递,在植株低氮逆境响应过程中发挥重要作用。本研究对细胞分裂素响应调节基因TaARR1介导植株抵御低氮逆境的功能进行了鉴定。TaARR1包含植物种属同源蛋白均具有的2个保守功能域,在胞质翻译后经内质网分选靶向细胞核内。低氮胁迫下,根叶组织中TaARR1的表达发生明显改变,表现在27 h低氮胁迫下随处理进程表达水平不断增强;此外,将低氮处理27 h植株转入正常供氮的恢复处理后,根叶中受低氮诱导的TaARR1转录本均随恢复处理进程不断下调。与野生型对照(WT)相比,超表达TaARR1烟草株系的抵御低氮逆境能力增强,表现为低氮处理下植株长势增强,植株干质量和氮累积量增多,谷氨酰胺合成酶(GS)活性提高。对低氮处理下超表达TaARR1转化株系中编码硝酸盐转运蛋白(NRT)和GS基因家族成员的表达模式研究表明,NRT家族基因NtNRT2.2和GS家族基因NtGS3 在转化株系中的表达水平显著高于上述基因在对照中的表达;其他上述2个家族供试基因在低氮处理转化株系和对照中的表达无明显改变。基因转化分析证实了NtNRT2.2和NtGS3在调控植株低氮胁迫下氮素吸收累积、GS活性、植株干质量和氮效率过程中发挥着重要作用。上述研究结果表明,TaARR1介导植株抵御低氮逆境能力的增强,与其对特定下游氮素吸收和氮素同化基因的转录调控密切相关。本研究发现,TaARR1通过转录调节NRT和GS家族基因,改善低氮胁迫下的植株氮素吸收和同化效率,在介导植株抵御低氮逆境中发挥着重要生物学功能。
↑ 向上滑动查看更多Cite this article: |
YANG Meng-ya, CHEN Jia-qi, TIAN He-yang, NI Chen-yang, XIAO Kai. 2019. TaARR1, a cytokinin response regulator gene in Triticum aestivum, is essential in plant N starvation tolerance via regulating the N acquisition and N assimilation. Journal of Integrative Agriculture, 18(12): 2691-270. |
生理·生化·耕作·栽培
Optimization of sowing date and seeding rate for high winter wheat yield based on pre-winter plant development and soil water usage in the Loess Plateau, China
以冬前植株生长发育和土壤水分利用为基础优化黄土高原冬小麦高产的播期播量
✺ REN Ai-xia, SUN Min, WANG Pei-ru, XUE Ling-zhu, LEI Miao-miao, XUE Jian-fu, GAO Zhi-qiang, YANG Zhen-ping
播期和播量对冬小麦生产至关重要。连续三年设计三个播期(9月20日,SD1;10月1日,SD2;10月10日,SD3)、三个播量(67.5 kg hm-2(SR67.5)、90 kg hm-2(SR90)、112.5 kg hm-2(SR112.5))大田试验,为确定冬小麦高产的适宜播期和播量。三个生长季播种至冬前积温季节性变化较大,达到冬前壮苗的适宜播期表现为2012–2013年为SD2,2013–2014年为SD3,2014–2015年为SD1和SD2。年度间夏季降水量的变化影响了土壤水分贮存,从而通过影响冬前至成熟期土壤水分消耗而影响籽粒产量。冬前至孕穗阶段较低的土壤水分消耗将保存的土壤水分供给开花至成熟阶段利用,导致较高的籽粒产量。2012–2013和2014–2015两个试验年度,SD2+SR90冬前至孕穗的土壤水分消耗最低,而2013–2014年度与SR67.5和SR112.5结果相近。而对于开花至成熟阶段,三个试验年度,SD2+SR90土壤水分消耗均达最高。不同降水年份小麦后期最高的水分消耗会导致最高的籽粒产量。穗数是对籽粒产量最大的贡献,穗粒数和千粒重对产量也有贡献,尤其土壤水分较多时。说明,播期和播量通过影响不同阶段土壤水分消耗而影响籽粒产量。通过选择适宜的播期(10月1日)和播量(90 kg hm-2)来获得高产。在此基础上,建议播期由目前的9月22或23日推迟至10月1日。
↑ 向上滑动查看更多Cite this article: |
REN Ai-xia, SUN Min, WANG Pei-ru, XUE Ling-zhu, LEI Miao-miao, XUE Jian-fu, GAO Zhi-qiang, YANG Zhen-ping. 2019. Optimization of sowing date and seeding rate for high winter wheat yield based on pre-winter plant development and soil water usage in the Loess Plateau, China. Journal of Integrative Agriculture, 18(1): 33-42. |
Alleviation of arsenic toxicity by phosphate is associated with its regulation of detoxification, defense, and transport gene expression in barley
磷缓解大麦砷毒害及其与脱毒、防御和转运基因表达的关系
✺ Gerald Zvobgo, Jonas Lwalaba Wa Lwalaba, Tichaona Sagonda, James Mutemachani Mapodzeke, Noor Muhammad, Imran Haider Shamsi, ZHANG Guo-ping
土壤砷污染已严重威胁作物安全生产。前期研究显示,磷与砷在影响作物生长和吸收上具有拮抗作用,但磷缓解砷毒害的机制尚不完全清楚。为此,有必要明确适量施加磷肥是否抑制砷的吸收及其相关机制。本试验以两个砷毒耐性不同的大麦基因型为材料,研究了施磷对砷吸收、抗氧化酶活性、抗氧化物含量以及砷运输、防御和脱毒相关基因表达的影响。结果显示,两个大麦基因型受到100 μmol L-1 As胁迫时,加磷处理显著降低植株组织中的砷浓度,并显著影响过氧化氢酶和超氧歧化酶活性、谷胱甘肽含量以及几种磷转运子基因的相对表达,以上性状均为对耐性基因型的影响大于敏感基因型,启示出加磷通过增强耐性基因型的砷转运、防御和脱毒相关基因表达而缓解砷的毒害,说明在砷污染土壤中适量施用磷肥可以控制砷折的吸收与毒害作用。
↑ 向上滑动查看更多
Cite this article: |
Gerald Zvobgo, Jonas Lwalaba Wa Lwalaba, Tichaona Sagonda, James Mutemachani Mapodzeke, Noor Muhammad, Imran Haider Shamsi, ZHANG Guo-ping. 2019. Alleviation of arsenic toxicity by phosphate is associated with its regulation of detoxification, defense, and transport gene expression in barley. Journal of Integrative Agriculture, 18(2): 381-394. |
Leaf chlorophyll content retrieval of wheat by simulated RapidEye, Sentinel-2 and EnMAP data
基于RapidEye、Sentinel-2和EnMap模拟数据的冬小麦叶绿素含量估测研究
✺ CUI Bei, ZHAO Qian-jun, HUANG Wen-jiang, SONG Xiao-yu, YE Hui-chun, ZHOU Xian-feng
作物叶片叶绿素含量是表征作物营养及健康状况的重要指标。研究发现红边光谱信息与叶绿素含量密切相关,并基于高光谱数据广泛应用于冠层水平叶绿素含量估测研究,而基于卫星红边数据的叶片叶绿素含量反演尚缺乏系统研究。本文以含红边波段的卫星数据(RapidEye、Sentinel-2和EnMAP)为数据源,开展冬小麦叶片叶绿素含量估测研究,并对不同卫星数据的估测能力进行评估。通过对不同田间管理条件下的冬小麦冠层高光谱实测数据进行重采样获得模拟的RapidEye、Sentinel-2和EnMAP卫星数据。基于偏最小二乘法和植被指数法,利用模型数据估测冬小麦叶片叶绿素含量。研究结果表明,1) 基于偏最小二乘法,Sentinel-2数据反演精度最高(2002,2010和2002+2010数据集R2分别为0.755,0.844和0.805),其次为EnMAP数据(2002,2010和2002+2010数据集R2=0.735, 0.867和0.771)和RapidEye数据(2002,2010和2002+2010数据集R2=0.689, 0.710和 0.707)。基于植被指数法,针对Sentinel-2和EnMap数据,MTCI指数(含两个红边波段)表现出强敏感性和鲁棒性(0.628<R2<0.852);针对RapidEye数据,NDRE1、SRRE1和CIRE1指数(含单一红边波段)表现出强敏感性和鲁棒性(0.420<R2<0.561)。2) 不同波长的红边波段对叶片叶绿素含量反演的重要性不同,基于偏最小二乘法构建的反演模型中短波红边波段(699-734 nm)贡献大,而植被指数反演模型中长波红边波段(740 -783 nm) 贡献大。3) 新增红边波段可显著提高模型的预测精度,但并非红边波段越多预测精度越高。RapidEye、Sentinel-2和EnMAP数据可实现大面积冬小麦叶绿素含量准确监测,并且针对红边波段研究结果对未来卫星传感器红边波段的设计具有指导意义。
↑ 向上滑动查看更多Cite this article: |
CUI Bei, ZHAO Qian-jun, HUANG Wen-jiang, SONG Xiao-yu, YE Hui-chun, ZHOU Xian-feng. 2019. Leaf chlorophyll content retrieval of wheat by simulated RapidEye, Sentinel-2 and EnMAP data. Journal of Integrative Agriculture, 18(6): 1230-1245. |
Global sensitivity analysis of wheat grain yield and quality and the related process variables from the DSSAT-CERES model based on the extended Fourier Amplitude Sensitivity Test method
DSSAT-CERES模型产量、品质及过程变量的模型参数全局敏感性分析
✺ LI Zhen-hai, JIN Xiu-liang, LIU Hai-long, XU Xin-gang, WANG Ji-hua
作物生长模型综合考虑品种、环境、管理等因素,是分析各种因素对作物生长、生产力及农业决策影响的有效工具。但是,在模型应用过程中,模型参数的优化及调试是模型应用的首要及难点问题,敏感性分析成为一种确定模型各类参数敏感性的有效方法。在本研究中,扩展傅里叶振幅灵敏度检验(EFAST)法被用于评价DSSAT-CERES模型中39个小麦品种参数和6个土壤参数对各类输出变量的敏感性,其中输出变量包括收获期的产量和品质(以籽粒蛋白质含量为例),以及生长过程变量(叶面积指数、地上部生物量和植株氮素累积量)。结果表明:(1)参数的区间范围对参数敏感性贡献小于参数本身的敏感性;(2)产量与籽粒蛋白质含量的参数敏感性不同,并且参数的交互作用对籽粒蛋白质含量的影响高于对产量的影响;(3)生长过程变量的参数敏感性表现出较大差异。对于模型的生长过程及模型结构具有较大影响,但在收获变量中未体现敏感性的参数,需要在调参过程中进行考虑。↑ 向上滑动查看更多
Cite this article: |
LI Zhen-hai, JIN Xiu-liang, LIU Hai-long, XU Xin-gang, WANG Ji-hua. 2019. Global sensitivity analysis of wheat grain yield and quality and the related process variables from the DSSAT-CERES model based on the extended Fourier Amplitude Sensitivity Test method. Journal of Integrative Agriculture, 18(7): 1547-1561. |
Estimating total leaf nitrogen concentration in winter wheat by canopy hyperspectral data and nitrogen vertical distribution
基于冬小麦冠层光谱数据和氮素垂直分布规律的冬小麦叶片氮浓度反演
✺ DUAN Dan-dan, ZHAO Chun-jiang, LI Zhen-hai, YANG Gui-jun, ZHAO Yu, QIAO Xiao-jun, ZHANG Yun-he, ZHANG Lai-xi, YANG Wu-de
利用遥感技术对作物氮素进行监测,有利于提高施肥效率、减轻生态环境负担,对实现经济效益和生态效益都具有重要意义。以2013-2014年冬小麦生长季试验数据为基础,通过结合氮素垂直分布规律 (VND) 和高光谱数据建立了冬小麦叶片总氮浓度 (TLNC) 模型,并进行验证。结果表明:(1) 叶片氮含量(LNC) 具有明显的垂直分布规律,从顶层到底层呈二次多项式趋势。(2) 不同生长阶段遥感探测的有效层不同。拔节期、挑旗期、开花期和灌浆期的有效探测层分别为整个冠层、上三层、上三层和上一层。(3)考虑VND的LNC模型具有较高的预测精度和稳定性。基于GI、mND705和NDVI的TLNC模型R2分别为0.61、0.59和0.53,nRMSE分别为8.84%、8.89%和9.37%。因此,考虑VND的LNC模型为田间氮素监测提供了一种准确、无损的方法。↑ 向上滑动查看更多
Cite this article: |
DUAN Dan-dan, ZHAO Chun-jiang, LI Zhen-hai, YANG Gui-jun, ZHAO Yu, QIAO Xiao-jun, ZHANG Yun-he, ZHANG Lai-xi, YANG Wu-de. 2019. Estimating total leaf nitrogen concentration in winter wheat by canopy hyperspectral data and nitrogen vertical distribution. Journal of Integrative Agriculture, 18(7): 1562-1570. |
Effect of nanosilver (nAg) on disinfection, growth, and chemical composition of young barley leaves under in vitro conditions
✺ Marcelina Krupa-Małkiewicz, Jan Oszmiański, Sabina Lachowicz, Małgorzata Szczepanek, Bogusława Jaśkiewicz, Kamila Pachnowska, Ireneusz Ochmian
Cereals, including barley, have been playing a key role in human diet for a long time. The objective of the present study was to determine the effect of nanosilver (nAg) on limitation of infections, morphological features, and their chemical composition of young barley seedlings under in vitro condition. Addition of 0, 2, 4, 6 and 8 mg dm-3 nAg into MS medium was used. Obtained results showed that the effect on the morphological features depended on the nAg concentration. The addition of 6 and 8 mg dm-3 nAg into MS medium limited the number of infected barley embryos in vitro, whereas 4 and 8 mg dm-3 nAg resulted in the highest seedlings with the longest roots. nAg in the medium affected the colour of leaves and increased the contents of chlorophyll and β-carotene, in particular in seedlings growing in MS medium supplied with 6 mg dm-3 nAg. The addition of 8 mg dm-3 had the greatest effect on the contents of vitamin C and E in young barley seedlings. It was found that the contents of K and Ca in the young barley leaves were lower, as compared to control plants. The presence of 6 mg dm-3 nAg in the medium resulted in an increased contents of N, Mg, Zn, Cu, and P. Hence, a diversified effect of nAg on individual groups of polyphenolic compounds was noticed. The presence of 2 and 8 mg dm-3 nAg caused higher content values of polyphenolic compounds in young barley leaves
↑ 向上滑动查看更多Cite this article: |
Marcelina Krupa-Małkiewicz, Jan Oszmiański, Sabina Lachowicz, Małgorzata Szczepanek, Bogusława Jaśkiewicz, Kamila Pachnowska, Ireneusz Ochmian. 2019. Effect of nanosilver (nAg) on disinfection, growth, and chemical composition of young barley leaves under in vitro conditions. Journal of Integrative Agriculture, 18(8): 1871-1881. |
The effects of soil moisture and salinity as functions of groundwater depth on wheat growth and yield in coastal saline soils
滨海盐土水埋深对土壤水盐及小麦生长和产量的影响
✺ ZHANG He, LI Yan, MENG Ya-li, CAO Nan, LI Duan-sheng, ZHOU Zhi-guo, CHEN Bing-lin, DOU Fu-gen
水埋深会影响滨海盐土水分和盐分的含量,从而对作物生长和产量产生影响。本研究旨在探讨:1) 受水埋深影响的水盐胁迫对小麦生长的影响,2) 确定滨海盐土小麦生长较适宜的水埋深。大田试验水埋深处理 (通过土柱来维持) 分别在2013-2014年为0.7、1.1、1.5、1.9、2.3、2.7 m,2014-2015年为0.6、1.0、1.4、1.8、2.2、2.6 m。结果表明,土壤水分与盐分呈正相关关系。渍水与高盐胁迫 (2013-2014年水埋深0.7 m,2014-2015年0.6 m) 对小麦生长的影响程度大于轻度干旱、中盐胁迫 (2013-2014年2.3 m) 或轻度干旱、低盐胁迫 (2013-2014年2.7 m,2014-2015年2.2 m和2.6 m)。小麦孕穗期对水盐胁迫反应最敏感。在2013-2014年,水埋深 (沟深) 1.9 m (正常水分、中盐) 处和2.3 m (轻度干旱、中盐) 处,2014-2015年,水埋深1.8 m (正常水分、中盐) 处、2.2 m (轻度干旱、低盐) 处,小麦的叶面积、SPAD、净光合速率、籽粒产量和面粉品质最佳。在滨海盐土0-20 cm和20-40 cm土层下,较适宜的土壤相对含水量和土水比1:5浸提液电导率分别为58.67%-63.07%和65.51%-72.66% (2013-2014年),63.09%-66.70%和69.75%-74.72% (2014-2015年);0.86-1.01 ds m-1和0.63-0.77 ds m-1 (2013-2014年),0.57-0.93 ds m-1和0.40-0.63 ds m-1 (2014-2015年)。
↑ 向上滑动查看更多
Cite this article: |
ZHANG He, LI Yan, MENG Ya-li, CAO Nan, LI Duan-sheng, ZHOU Zhi-guo, CHEN Bing-lin, DOU Fu-gen. 2019. The effects of soil moisture and salinity as functions of groundwater depth on wheat growth and yield in coastal saline soils. Journal of Integrative Agriculture, 18(11): 2472-2482. |
✺ Hafiz Ghulam Muhu-Din Ahmed, Abdus Salam khan, LI Ming-ju, Sultan Habibullah Khan, Muhammad Kashif
Genetic diversity is the base of any genetic improvement breeding program aimed at stress breeding. The variability among breeding materials is of primary importance in the achievements of a good crop production. Herein, 105 wheat genotypes were screened against drought stress using factorial completely randomized design at seedling stage to determine the genetic diversity and traits association conferring drought tolerance. Analysis of variances revealed that all the studied parameters differed significantly among all genotypes, indicating the significance genetic variability existed among all genotypes for studied indices. The 10 best performance genotypes G1, G6, G11, G16, G21, G26, G39, G44, G51, and G61 were screened as drought tolerant, while five lowest performance genotypes G3, G77, G91, G98, and G105 were screened as drought susceptible. Root length, chlorophyll a, chlorophyll b, and carotenoid contents were significantly correlated among themselves which exhibited the importance of these indices for rainfed areas in future wheat breeding scheme. Shoot length exhibited non-significant and negative association with other studied traits, and its selection seems not to be a promising criteria for this germplasm for drought stress. Best performance genotypes under drought stress conditions will be useful in future wheat breeding program and early selection will be effective for developing high yielding and drought tolerant wheat varieties.↑ 向上滑动查看更多Cite this article: |
Hafiz Ghulam Muhu-Din Ahmed, Abdus Salam khan, LI Ming-ju, Sultan Habibullah Khan, Muhammad Kashif. 2019. Early selection of bread wheat genotypes using morphological and photosynthetic attributes conferring drought tolerance. Journal of Integrative Agriculture, 18(11): 2483-2491. |
往期精选
欢迎投稿:http://www.chinaagrisci.com
欢迎订阅:
2019年定价80元/册,全年刊期:12期,全年定价960元。
① 各地邮局订阅:邮发代号2-851;
② 编辑部期刊发行部:联系电话 010-82106247;
③ 网上购买:搜淘宝店、微店店铺名称:中科期刊(订阅及销售过刊);或扫描下方二维码:
中国农业科学微平台
CAAS_ChinaAgriSci
欢迎关注、分享、投稿