Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10681-010-0307-8 |
Drought tolerance variability in S-1 pollinator lines developed from a sugar beet open population | |
Ahmadi, M.1; Heravan, E. Majidi1; Sadeghian, S. Y.2; Mesbah, M.2; Darvish, F.1 | |
通讯作者 | Ahmadi, M. |
来源期刊 | EUPHYTICA |
ISSN | 0014-2336 |
出版年 | 2011 |
卷号 | 178期号:3页码:339-349 |
英文摘要 | Drought tolerance is one of the most important objectives of sugar beet breeding programs in semi-arid regions, particularly during the last decade. Due to global climate changes and limitations of agricultural irrigation water, varieties with drought tolerance are taken into consideration in order to avoid yield losses due to drought. In this study, drought tolerance of 76 S-1 lines (full-sib families) that had been extracted from a genetically broad base multigerm sugar beet open pollinated population, were examined. Test crosses were made between the lines as pollinators and a cytoplasmic male sterile (CMS) single cross. The consequent hybrids along with checks were evaluated during 2007 and 23 more tolerant hybrids during 2008, in two adjacent experiments under drought stress and non-stress conditions. Drought tolerance indices calculated based on sugar yield, such as mean productivity (MP), geometric mean productivity (GMP) and stress tolerance index (STI) were used to assess hybrids responses to drought. The results showed significant genetic differences for root yield and sugar yield under both conditions. Drought tolerance indices displayed significant genetic variability for sugar yield among the hybrids. Many hybrids were drought tolerant as compared with the original base population as indicated by their high STI. The estimates of heritability for sugar yield in stress and non-stress conditions were much close to each other (0.31 and 0.34, respectively). Whereas, for root yield the heritability estimate in stress condition (0.46) was relatively higher than that in non-stress condition (0.34). Significant differences were observed among the selected hybrids for root yield and sugar yield, indicating genotypic variability for pollinator lines derived from the population. There were no significant differences for sugar content. For increasing the drought tolerance potential in a breeding population and developing drought-tolerant varieties by male parent, the drought-tolerant lines could be used. |
英文关键词 | Sugar beet Drought tolerance Variability Line Heritability |
类型 | Article |
语种 | 英语 |
国家 | Iran |
收录类别 | SCI-E |
WOS记录号 | WOS:000287858400005 |
WOS关键词 | BETA-VULGARIS L. ; STRESS ENVIRONMENTS ; SELECTION ; TRAITS ; PRODUCTIVITY ; CLIMATE ; IMPACT ; YIELD ; IMPROVEMENT ; GENOTYPES |
WOS类目 | Agronomy ; Plant Sciences ; Horticulture |
WOS研究方向 | Agriculture ; Plant Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168052 |
作者单位 | 1.Islamic Azad Univ, Fac Agr & Nat Resource, Sci & Res Branch, Tehran 1477893855, Iran; 2.SPCRI, Karaj, Iran |
推荐引用方式 GB/T 7714 | Ahmadi, M.,Heravan, E. Majidi,Sadeghian, S. Y.,et al. Drought tolerance variability in S-1 pollinator lines developed from a sugar beet open population[J],2011,178(3):339-349. |
APA | Ahmadi, M.,Heravan, E. Majidi,Sadeghian, S. Y.,Mesbah, M.,&Darvish, F..(2011).Drought tolerance variability in S-1 pollinator lines developed from a sugar beet open population.EUPHYTICA,178(3),339-349. |
MLA | Ahmadi, M.,et al."Drought tolerance variability in S-1 pollinator lines developed from a sugar beet open population".EUPHYTICA 178.3(2011):339-349. |
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