Performance of contrasting rice cultivars selected for rainfed lowland conditions in relation to soil fertility and water availability

Wonprasaid, Sodchol; Khunthasuvon, S.; Sittisuang, Prasoot; Fukai, S.

doi:10.1016/0378-4290(96)00013-5

Cited by 39 publications

(10 citation statements)

References 15 publications

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“…Poor adaptation may lead to an unfavourable development, resulting in yield loss, such as occurred at Ubon in 2001 with the japonica genotypes NI and TE due to very early heading. The very low yield at Ubon is consistent with reported values [32,33]. Cooper et al [34] reported that a major factor contributing to Y × G × E interactions for grain yield in North-East Thailand was the variation in days-to-flower.…”

Section: Genetic Adaptation For Yield Responses To Environmentsupporting

confidence: 90%

Adaptation and performance of rice genotypes in tropical and subtropical environments

Jing

Spiertz

Hengsdijk

et al. 2010

NJAS: Wageningen Journal of Life Sciences

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a b s t r a c tStandardized field experiments were carried out to study the performance of five rice genotypes derived from different germplasm in terms of yield, harvest index (HI) and grain quality at eight agro-ecological sites of the tropics and subtropics across Asia during 2001 and 2002. Considering that indica and javanica genotypes adapt to warm climatic conditions, and japonica genotypes to cool agro-climatic conditions, it is hypothesized that indica × japonica hybrids may combine high yields and good quality traits under a wide range of agro-climatic conditions. Grain yield, HI, protein content and amylose content varied considerably among genotypes and environments. Mean rice yields of genotypes ranged from 1.5 to 11 t ha −1 across the eight sites; on average yields were 7.2 t ha −1 under subtropical and 2.7 t ha −1 under tropical conditions. The much lower yields in tropical environments resulted from a low biomass as well as a low HI. Among the genotypes, the indica × japonica hybrid showed the highest yield under subtropical conditions, and a higher yield than the japonica genotypes and the indica × javanica hybrid but lower than the indica genotype under tropical conditions. Phenology of genotypes varied strongly across environments. Low yields at tropical locations were associated with a low light capture due to short growth duration. Post-anthesis light-use efficiencies and the photothermal quotient explained much of the variation in yield. Protein content varied among genotypes depending on location and year. Variation in amylose content of rice grains was mainly associated with genotypic differences and much less with environmental conditions, but contents decreased with higher post-anthesis ambient temperatures. The indica × japonica hybrid combined high yields with a favourable amylose content and showed a better ability to adapt to cool and to warm agro-climatic conditions than the indica or japonica genotypes. Our study showed the magnitude of yield penalties associated with growing rice genotypes in environments to which they are not adapted. The consequences of these findings for improved adaptation of rice are discussed.

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Section: Genetic Adaptation For Yield Responses To Environmentsupporting

confidence: 90%

Adaptation and performance of rice genotypes in tropical and subtropical environments

Jing

Spiertz

Hengsdijk

et al. 2010

NJAS: Wageningen Journal of Life Sciences

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“…The reduction in grain yield was observed under farmer's field for the different genotypes while experimental mean reduce up to 30.43 per cent. The similar findings were found by (Wonprasaid et al, 1996). Differences among genotypes in yield under stress were partitioned into differences in yield potential, drought escape, and drought tolerance.…”

Section: Drought Susceptible Index (Dsi)supporting

confidence: 70%

Pearl Millet: Nutritional Significance and Deployment Strategy for Sustainable Agriculture

Mall¹,

Kumar²,

Misra³

2017

Int.J.Curr.Microbiol.App.Sci

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“…Constans is an ortholog of Hd1, a major determinant of flowering time in rice, and it promotes flowering under short day conditions [9]–[10]. Delayed flowering is a common response of rice under vegetative drought stress [11]–[12], and our observed down-regulation of early pathway components OsGI and OsFKF1 may be part of the underlying molecular basis for this phenomenon. Other clock-associated genes that were commonly down-regulated from FTSW 1-0.5 include psuedo-response regulators OsTOC1 and OsPRR95.…”

Section: Resultsmentioning

confidence: 57%

Transcriptome Profiling of Leaf Elongation Zone under Drought in Contrasting Rice Cultivars

et al. 2013

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Inhibition of leaf elongation and expansion is one of the earliest responses of rice to water deficit. Despite this sensitivity, a great deal of genetic variation exists in the extant of leaf elongation rate (LER) reduction in response to declining soil moisture. We analyzed global gene expression in the leaf elongation zone under drought in two rice cultivars with disparate LER sensitivities to water stress. We found little overlap in gene regulation between the two varieties under moderate drought; however, the transcriptional response to severe drought was more conserved. In response to moderate drought, we found several genes related to secondary cell wall deposition that were down regulated in Moroberekan, an LER tolerant variety, but up-regulated in LER sensitive variety IR64.

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Performance of contrasting rice cultivars selected for rainfed lowland conditions in relation to soil fertility and water availability

Cited by 39 publications

References 15 publications

Adaptation and performance of rice genotypes in tropical and subtropical environments

Adaptation and performance of rice genotypes in tropical and subtropical environments

Pearl Millet: Nutritional Significance and Deployment Strategy for Sustainable Agriculture

Transcriptome Profiling of Leaf Elongation Zone under Drought in Contrasting Rice Cultivars

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