Arid
不同倍性小麦材料对水分和密度条件的响应
其他题名Response of Different Ploidy Wheat to Moisture and Density Conditions
刘立生; 张岁岐; 王征宏
来源期刊水土保持研究
ISSN1005-3409
出版年2009
卷号16期号:5页码:203-209
中文摘要以栽培一粒(2n)、栽培二粒(4n)和长武134(6n)为材料在大型活动防雨棚条件下研究不同倍性小麦材料在不同密度和水分条件下的产量适应性变化.结果发现,在两种水分条件下随着染色体倍性从2n6n的增加,产量、千粒重、水分利用效率(WUE)和收获指数均呈增加趋势,在水分胁迫下各材料穗粒数和穗数则呈降低趋势,而在正常供水下穗粒数则呈增加趋势.在水分胁迫下栽培一粒、栽培二粒和长武134最高产量分别出现在中、低、高密度群体,而同一材料不同密度群体间变异系数分别为6.73%,1.98%,9.07%;不同倍性材料千粒重均随着密度增加而减小,而穗数则逐渐增加,二倍体的穗粒数以中密度最高,四倍体的穗粒数随着群体密度的增加而减小,六倍体则相反;三种材料WUE和收获指数分别以低、高、低密度最高.正常供水下随着染色体倍性从2n6n的增加,三个倍性材料最高产量分别出现在高、低、低密度群体,而同一材料不同密度群体间变异系数分别为6.01%,17.12%,2.46%;千粒重表现为中密度>低密度>高密度,而穗粒数均以低密度群体最高,二倍体和四倍体以高密度群体最低,六倍体则以中密度群体最低,穗数则随着密度群体增加而增加;二倍体WUE以高密度群体最大,中密度最小,四倍体和六倍体随着群体密度的增加而逐渐减小,二倍体收获指数以低密度最高,中密度最低,四倍体和六倍体表现为低密度>中密度>高密度.上述研究结果为干旱半干旱地区小麦节水高产栽培和育种提供了理论依据.
英文摘要The adaptive change of different ploidy wheat materials to density and water conditions were studied under rain-out shelter experiment condition. The results showed that in the evolution of wheat from diploid to tetraploid and hexaploid, yield, grain weight, water use efficiency and harvest index were increased gradually under drought conditions. The maximum yield of different material appear in the medium, low and high-density groups, the yield variance coefficients of different material from 2n to 6n were 6. 73%,1.98% and 9.07% respectively; grain weight increased, and ear number and grain number per ear gradually decreased with the ploidy increased; grain weight decreased and ear number increased with the density increased for the same material. The grain number per ear was the highest for Diploid in Medium density population, and it increased for tetraploid wheat with the population density increased but it was decreased for hexaploid wheat. Water use efficiency and harvest index gradually increased with the increase of ploidy. Under irrigation conditions, the yield, grain weight, grain number per ear, water use efficiency and harvest index were increased gradually with the increase of ploidy. The maximum yield of different material appear in the high, low and low-density population, and the yield variance coefficients of different material from 2n to 6n were 6.01% ,17.12% ,2.46% respectively; the highest grain weight appear in medium-density population and the lowest appear in high-density population for the same material; the highest grain number per ear appear in low-density population and the ear number increased with the density increases for same material; the maximum WUE of diploid appear in high-density population, WUE of tetraploid and hexaploid wheat decreased with the increase of density; the maximum harvest index of diploid appear in low-density, and they were decreased with density increase for tetraploid and hexaploid wheat. The results of the study provides a theoretical basis on the cultivation and breeding of arid and semi-arid region water-saving and high-yield of wheat.
中文关键词不同倍性小麦 ; 产量 ; 水分 ; 密度 ; 响应
英文关键词different ploidy wheat yield moisture density response
类型Article
语种中文
国家中国
收录类别CSCD
WOS类目Agriculture
WOS研究方向Agriculture
CSCD记录号CSCD:3728218
来源机构西北农林科技大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/224230
作者单位刘立生, 西北农林科技大学, 土壤侵蚀和旱地农业国家重点实验室, 杨凌, 陕西 712100, 中国.; 张岁岐, 西北农林科技大学, 土壤侵蚀和旱地农业国家重点实验室, 杨凌, 陕西 712100, 中国.; 王征宏, 西北农林科技大学, 土壤侵蚀和旱地农业国家重点实验室, 杨凌, 陕西 712100, 中国.
推荐引用方式
GB/T 7714
刘立生,张岁岐,王征宏. 不同倍性小麦材料对水分和密度条件的响应[J]. 西北农林科技大学,2009,16(5):203-209.
APA 刘立生,张岁岐,&王征宏.(2009).不同倍性小麦材料对水分和密度条件的响应.水土保持研究,16(5),203-209.
MLA 刘立生,et al."不同倍性小麦材料对水分和密度条件的响应".水土保持研究 16.5(2009):203-209.
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