Matches in SemOpenAlex for { <https://semopenalex.org/work/W66690725> ?p ?o ?g. }
Showing items 1 to 77 of
77
with 100 items per page.
- W66690725 abstract "Sorghum is a major dryland cereal crop in areas with low and unpredictable rainfall, and improvements in root related drought adaptive traits may be advantageous. There is little information available about the extent of genetic variation in root architecture in sorghum and the potential for manipulating this variation to improve the tolerance of sorghum in water limiting conditions. A lack of simple and efficient root screening methods has hindered the progress. In this study we employ a screening method developed to investigate genetic variation in root architecture, with a particular focus on nodal root angle. A diverse range of sorghum inbred lines and hybrids were studied to explore the extent of genetic variation in this trait and the nature of its genetic control. The encompassing nodal root angle of sorghum inbred lines varied from about 15o to 50o. While the heritability for nodal root angle was high, the significant specific combining ability limited predictability of expression in hybrids. Genetic variation among inbred lines and hybrids in nodal root angle was largely distinct from other plant size traits, such as shoot and root mass, and plant leaf area. Variability in these plant size traits in hybrids was associated with the female parent and significant general combining ability. Selected contrasting sorghum genotypes varying in nodal root angle (wide, intermediate and narrow) at the seedling stage were then grown in large root observation chambers. The chambers were watered to field capacity prior to sowing and no further water was added. Although there were no significant differences among entries in total soil water used or water use efficiency, the genotype SC170-6-8 (wide angle) had a tendency of greater proportion of its total water extraction at distance from the plant due to the broader spatial pattern of its root system. Conversely, the genotype B923296 (narrow angle) had a greater tendency of water extraction from depth immediately below the plant. These findings were consistent with observed differences in root system architecture among the entries. Although further research is needed to more clearly quantify these differences in water extraction capabilities, this finding has implications for seedling nodal root angle as an indicator for specific adaptation in water-limited environments. A genetic linkage map for the RIL population of the cross (B923296 x SC170-6-8) with contrasting nodal root angle was constructed on a subset of lines based on DArT (Diversity Arrays Technology) and SSR markers. This was used to identify two QTL for nodal root angle on chromosomes SBI-05 and SBI-09. They were independent of QTL associated with plant size and could be used in a molecular breeding strategy to optimize sorghum root architecture for better accessibility of available water in a target environment." @default.
- W66690725 created "2016-06-24" @default.
- W66690725 creator A5033679574 @default.
- W66690725 date "2010-08-01" @default.
- W66690725 modified "2023-09-27" @default.
- W66690725 title "Genotypic variability in structure and function of sorghum root systems" @default.
- W66690725 hasPublicationYear "2010" @default.
- W66690725 type Work @default.
- W66690725 sameAs 66690725 @default.
- W66690725 citedByCount "0" @default.
- W66690725 crossrefType "journal-article" @default.
- W66690725 hasAuthorship W66690725A5033679574 @default.
- W66690725 hasConcept C104317684 @default.
- W66690725 hasConcept C106934330 @default.
- W66690725 hasConcept C137580998 @default.
- W66690725 hasConcept C155868670 @default.
- W66690725 hasConcept C161890455 @default.
- W66690725 hasConcept C168741863 @default.
- W66690725 hasConcept C199360897 @default.
- W66690725 hasConcept C2776096895 @default.
- W66690725 hasConcept C2778157034 @default.
- W66690725 hasConcept C2780848231 @default.
- W66690725 hasConcept C41008148 @default.
- W66690725 hasConcept C48189365 @default.
- W66690725 hasConcept C54355233 @default.
- W66690725 hasConcept C6557445 @default.
- W66690725 hasConcept C68873052 @default.
- W66690725 hasConcept C76725341 @default.
- W66690725 hasConcept C81941488 @default.
- W66690725 hasConcept C86803240 @default.
- W66690725 hasConcept C9287583 @default.
- W66690725 hasConceptScore W66690725C104317684 @default.
- W66690725 hasConceptScore W66690725C106934330 @default.
- W66690725 hasConceptScore W66690725C137580998 @default.
- W66690725 hasConceptScore W66690725C155868670 @default.
- W66690725 hasConceptScore W66690725C161890455 @default.
- W66690725 hasConceptScore W66690725C168741863 @default.
- W66690725 hasConceptScore W66690725C199360897 @default.
- W66690725 hasConceptScore W66690725C2776096895 @default.
- W66690725 hasConceptScore W66690725C2778157034 @default.
- W66690725 hasConceptScore W66690725C2780848231 @default.
- W66690725 hasConceptScore W66690725C41008148 @default.
- W66690725 hasConceptScore W66690725C48189365 @default.
- W66690725 hasConceptScore W66690725C54355233 @default.
- W66690725 hasConceptScore W66690725C6557445 @default.
- W66690725 hasConceptScore W66690725C68873052 @default.
- W66690725 hasConceptScore W66690725C76725341 @default.
- W66690725 hasConceptScore W66690725C81941488 @default.
- W66690725 hasConceptScore W66690725C86803240 @default.
- W66690725 hasConceptScore W66690725C9287583 @default.
- W66690725 hasLocation W666907251 @default.
- W66690725 hasOpenAccess W66690725 @default.
- W66690725 hasPrimaryLocation W666907251 @default.
- W66690725 hasRelatedWork W1821697977 @default.
- W66690725 hasRelatedWork W2027073185 @default.
- W66690725 hasRelatedWork W2028006126 @default.
- W66690725 hasRelatedWork W2053003328 @default.
- W66690725 hasRelatedWork W2075360583 @default.
- W66690725 hasRelatedWork W2099447152 @default.
- W66690725 hasRelatedWork W2143506429 @default.
- W66690725 hasRelatedWork W2151845820 @default.
- W66690725 hasRelatedWork W2165978280 @default.
- W66690725 hasRelatedWork W2182455996 @default.
- W66690725 hasRelatedWork W2551630297 @default.
- W66690725 hasRelatedWork W2917339830 @default.
- W66690725 hasRelatedWork W2973955937 @default.
- W66690725 hasRelatedWork W3038958014 @default.
- W66690725 hasRelatedWork W3094037201 @default.
- W66690725 hasRelatedWork W3109556195 @default.
- W66690725 hasRelatedWork W3173389614 @default.
- W66690725 hasRelatedWork W3182849206 @default.
- W66690725 hasRelatedWork W3208141596 @default.
- W66690725 hasRelatedWork W2474550174 @default.
- W66690725 isParatext "false" @default.
- W66690725 isRetracted "false" @default.
- W66690725 magId "66690725" @default.
- W66690725 workType "article" @default.