QTL mapping of maize (<i>Zea mays</i>) stay‐green traits and their relationship to yield

Zheng, Hongjian; Wu, Aiming; Zheng, Chong-Ke; Wang, Y. F.; Cai, Run; Shen, Xiaoli; Xu, Ruibin; Liu, P.; Kong, Lingrang; Dong, Shuting

doi:10.1111/j.1439-0523.2008.01529.x

Cited by 86 publications

(77 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results were in accordance with Almeida et al (2014) who observed that genetic variance was reduced for grain yield and increased for ASI under drought stress. Significant negative correlations between ASI and yield in this study were congruent with other findings (Bolanos & Edmeads, 1996;Zheng et al, 2009;Almeida et al, 2014).…”

supporting

confidence: 82%

Agronomic and molecular evaluation of maize inbred lines for drought tolerance

Mikić

Zorić

Stanisavljević

et al. 2017

Span. j. agric. res.

View full text Add to dashboard Cite

Drought is a severe threat to maize yield stability in Serbia and other temperate Southeast European countries occurring occasionally but with significant yield losses. The development of resilient genotypes that perform well under drought is one of the main focuses of maize breeding programmes. To test the tolerance of newly developed elite maize inbred lines to drought stress, field trials for grain yield performance and anthesis silk interval (ASI) were set in drought stressed environments in 2011 and 2012. Inbred lines performing well under drought, clustered into a group with short ASI and a smaller group with long ASI, were considered as a potential source for tolerance. The former contained inbreds from different heterotic groups and with a proportion of local germplasm. The latter consisted of genotypes with mixed exotic and Lancaster germplasm, which performed better in more drought-affected environments. Three inbreds were selected for their potential drought tolerance, showing an above-average yield and small ASI in all environments. Association analysis indicated significant correlations between ASI and grain yield and three microsatellites (bnlg1525, bnlg238 and umc1025). Eight alleles were selected for their favourable concurrent effect on yield increase and ASI decrease. The proportion of phenotypic variation explained by the markers varied across environments from 5.7% to 22.4% and from 4.6% to 8.1% for ASI and yield, respectively. The alleles with strongest effect on performance of particular genotypes and their interactions in specific environments were identified by the mean of partial least square interactions analysis indicating potential suitability of the makers for tolerant genotype selection.

show abstract

supporting

confidence: 82%

Agronomic and molecular evaluation of maize inbred lines for drought tolerance

Mikić

Zorić

Stanisavljević

et al. 2017

Span. j. agric. res.

View full text Add to dashboard Cite

show abstract

“…Climate change is expected to increase the frequency and severity of heat stress and drought events (Ahuja et al 2010;Long and Ort 2010). Avoidance of senescence under stress (stay-green) has been associated with maintained yield in grain crops (Harris et al 2007;Snape et al 2007;Thomas and Howarth 2000;Zheng et al 2009). Because the TaNAM-RNAi line exhibited delayed senescence in previous studies, we hypothesized that this line may also have delayed senescence under stress conditions, which would potentially result in improved yield under stress.…”

Section: Senescence and Yield Under Optimal And Stress Conditionsmentioning

confidence: 99%

“…Some SAGs are expressed under both natural and stressinduced senescence, while others are expressed exclusively during specific senescence conditions (Buchanan-Wollaston et al 2005; Van der Graaff et al 2006). Avoidance of leaf senescence during drought stress, a phenotype known as stay-green, is associated with grain yield in maize, wheat, and sorghum (Harris et al 2007;Snape et al 2007; Thomas and Howarth 2000;Zheng et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Nutrient partitioning and grain yield of TaNAM-RNAi wheat under abiotic stress

2013

View full text Add to dashboard Cite

Aims -Decreased expression of TaNAM genes by RNAi results in delayed senescence and decreased grain protein, iron, and zinc concentrations. Here, we determined whether NAM expression level alters onset of senescence under stress conditions, whether delayed senescence in the TaNAM-RNAi line resulted in improved tolerance to post-anthesis abiotic stress, and determined the effects of post-anthesis abiotic stress on N and mineral remobilization and partitioning to grain. Methods -Greenhouse-grown WT and TaNAM-RNAi wheat were characterized in two studies: three levels of N fertility or water limitation during grain fill. Studies were conducted under both optimal and heat stress temperatures. Senescence onset was determined by monitoring flag leaf chlorophyll. Results -Under optimal temperatures, TaNAM-RNAi plants had a yield advantage at lower N. TaNAM-RNAi plants had delayed senescence relative to the WT and lower grain protein and mineral concentrations, N remobilization efficiency, and partitioning of N and most minerals to grain. Conclusions -Nutritional quality of TaNAM-RNAi grain was consistently lower than WT. Delayed senescence of TaNAM-RNAi plants provided a yield advantage under optimal temperatures but not under water or heat stress. Discovery of specific NAM protein targets may allow separation of the delayed senescence and nutrient partitioning traits, which could be used for improvement of wheat.

show abstract

“…Three QTLs (quantitative trait loci), located on chromosomes 1AS (QSg.bhu-1A), 3BS (QSg.bhu-3B) and 7DS (QSg.bhu-7D) associated with stay-green character were found when recombinant inbred wheat lines (RILs) from the cross of the synthetic variety stay-green "Chirya 3" synchronized Indian cultivar 'Sonalika' were analyzed (KUMMAR et al, 2010). Mapping of QTLs in a maize segregating population (F 2 ) from contrasting parents for the stay-green character, resulted in 14 loci associated with stay-green and also high grain yield (ZHENG et al, 2009). …”

Section: Inheritance Of the Stay-green Charactermentioning

confidence: 99%