Gains from improvement for mid-season drought tolerance in tropical maize (Zea mays L.)

Zaidi, P.H.; Srinivasan, G.; Córdova, Hugo; Sánchez, C.

doi:10.1016/j.fcr.2004.01.010

Cited by 38 publications

(44 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similarly, Dubey et al, (2010) reported presence of significant genetic variation for all the drought related traits studied under different moisture management regimes revealing importance of locations/seasons, environments, location/ season  treatment and environment x treatment interaction for almost all the characters. Results were in conformity with Chapman et al, (1997); Banziger et al, (2000); Zaidi et al, (2004), Saindass et al, (2001); Meseka et al, (2008), Nepolean et al, (2012); ; Abuali et al, (2014) and Umar et al, (2015). Estimates of components of variability for various traits revealed a wide range of variability for all the characters under study in Y1, Y2 and pooled analysis indicating ample scope for selection of elite maize lines exhibiting tolerance to moisture stress.…”

Section: Resultssupporting

confidence: 76%

Assessment of Genetic Variability of a Set of Maize Inbred Lines for Drought Tolerance under Temperate Conditions

Gazal¹,

Nehvi²,

Lone³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 76%

Assessment of Genetic Variability of a Set of Maize Inbred Lines for Drought Tolerance under Temperate Conditions

Gazal¹,

Nehvi²,

Lone³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

View full text Add to dashboard Cite

“…Drought has been reported to be devastating when it occurs at flowering and pollination (Cakir 2004;Zaidi et al 2004). Campos et al (2006) reported 45-60% yield losses when drought occurred at silk emergence.…”

Section: Introductionmentioning

confidence: 97%

Gene action controlling grain yield and secondary traits in southern African maize hybrids under drought and non-drought environments

Derera

Tongoona

Vivek³

et al. 2007

Euphytica

View full text Add to dashboard Cite

Breeding maize hybrids for drought tolerance would significantly reduce yield loss due to drought in southern Africa. Mode of gene action controlling yield and secondary traits was investigated by mating 27 inbred lines, in sets according to a North Carolina design II scheme. The resultant 72 experimental and eight commercial hybrids were evaluated in 8 · 10 a-lattice design with two replications, in four drought and two non-drought environments. Under drought conditions, only general combining ability (GCA) variance was significant for yield, indicating predominance of additive effects. In non-drought environments, both GCA and specific combining ability variances were significant for yield, indicating importance of additive and non-additive effects, respectively. Contributions of male (GCA m ) and female GCA (GCA f ) effects to hybrids varied depending on the trait and conditions. Superior GCA f to GCA m effects for yield under drought conditions, and for ASI, prolificacy and ear aspect under both drought and non-drought conditions, suggested that maternal effects might have modified these traits. Larger GCA m than GCA f for ASI and silking dates under normal conditions indicated that paternal genotypes played a greater role in determining these traits. Similar GCA m and GCA f for yield under normal conditions, silking and anthesis dates under drought indicated that both parents made similar contribution to hybrids. Possibly, complications due to modification of traits by cytoplasmic effects and cross-over G · E for yield might partly explain why only a few drought tolerant hybrids have been developed. Practical implications of these findings in breeding drought tolerance in maize are discussed.

show abstract

“…Among the different plant population sizes there were no significant differences. According to Zaidi et al (2004), the stay green trait is directly related with tolerance to water stress after flowering.…”

Section: Resultsmentioning

confidence: 99%

Indirect Selection for Drought Tolerance in Maize Through Agronomic Traits and Seeds

Abreu¹,

Pinho²,

Santos

et al. 2017

RBMS

View full text Add to dashboard Cite

-High prolificacy, stay green, and a reduced anthesis-silking interval are among the traits most used for indirect selection for drought tolerance. The objective of this research was to evaluate five maize lines from the maize breeding program of the company Geneseeds Recursos Genéticos Ltda, to drought tolerance, grown at four plant population sizes, 40, 60, 80 and 100 thousand plants ha -1 . In these conditions, the following traits were evaluated: prolificacy, stay green and interval between female and male flowering, which are indirectly related to drought tolerance. The physiological quality of seeds and expression of the enzymes alpha amylase, esterase, catalase, superoxide dismutase, alcohol dehydrogenase, malate dehydrogenase, and heat resistant proteins were also evaluated. The experiment was conducted in a randomized block design in a split plot layout. Differences were observed between the lines for all traits analyzed. Lines 63, 64 and 91 showed the greatest yields and prolificacy, and lines 63, 64, 54 and 91 had the lowest intervals between male and female flowering. No effetc of plant population on the physiological quality of maize seeds was detected, and the highest values of germination and seed vigor were observed in lines 64, 44 and 91. Lines 63, 64 and 91 are considered as promising for drought tolerance. Keywords: Zea mays, Abiotic stress, Flowering, Plant population, indirect selection. SELEÇÃO INDIRETA PARA TOLERÂNCIA À SECA EM MILHO POR MEIO DE CARACTERÍSTICAS AGRONÔMICAS E DE SEMENTESRESUMO -Alta prolificidade, stay green, o reduzido intervalo entre florescimento masculino e feminino estão entre os caracteres mais utilizados para seleção indireta para a tolerância à seca. O objetivo nesta pesquisa foi avaliar cinco linhagens de milho do programa de melhoramento da empresa Geneseeds Recursos Genéticos Ltda., quanto à tolerância à seca, cultivadas em quatro populações de plantio, 40, 60, 80 e 100 mil plantas ha -1 . Nessas condições foram avaliados os seguintes caracteres indiretos relacionados à tolerância à seca: stay green, prolificidade, intervalo entre os florescimentos feminino e masculino. Foi avaliada também a qualidade fisiológica das sementes e a expressão das enzimas alfa amilase, esterase, catalase, superóxido desmutase, álcool desidrogenase, malato desidrogenase e proteínas resistentes ao calor. O experimento foi conduzido em delineamento em blocos casualizados, no esquema de parcelas subdividas. Houve diferenças entre as linhagens para todos os caracteres analisados.

show abstract

Gains from improvement for mid-season drought tolerance in tropical maize (Zea mays L.)

Cited by 38 publications

References 16 publications

Assessment of Genetic Variability of a Set of Maize Inbred Lines for Drought Tolerance under Temperate Conditions

Assessment of Genetic Variability of a Set of Maize Inbred Lines for Drought Tolerance under Temperate Conditions

Gene action controlling grain yield and secondary traits in southern African maize hybrids under drought and non-drought environments

Indirect Selection for Drought Tolerance in Maize Through Agronomic Traits and Seeds

Contact Info

Product

Resources

About