Influence of A1 cytoplasmic substitution on the downy-mildew incidence of pearl millet

Yadav, O. P.; Manga, V.; Gupta, Girish Kumar

doi:10.1007/bf00221878

Cited by 20 publications

(10 citation statements)

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“…Such effects are well documented in sorghum (LEN7. and ATKINS 1981) and in rice (YOUNG and VIRMANI 1990) but have only recently been studied in pearl millet (YADAV et al 1993). Despite maximum exploitation of A, cytoplasm, no efforts bavc so far been made to study its influence on combining ability.…”

mentioning

confidence: 99%

“…The various male sterile lines showed variable GGA effects (both significantly positive and negative), particularly for grain yield and biological yield, though they had a common A, cytoplasm. Thus, it appears that different nuclear genomes of male sterile lines interact differently with the same cytoplasm and such interactions may cause the differential effect of cytoplasm in some pairs (YADAV 1994).…”

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confidence: 99%

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Effect of Cytoplasmic Source on the Combining Ability of Agronomic Traits in Pearl Millet

Yadav

1994

Plant Breeding

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Among the available sources of cytoplasmic male sterility only the A, source has so far been exploited for breeding commercial hybrids of pearl millet {Pennisetum glaueum (L.) R. Br.). The influence of this source was studied by comparing the combining ability of five pairs of lines that differ in their cytoplasmic source. The effect on the expression of the traits, though modified by environment, was significant. The manifestation of cytoplasmic effects on general comhining ability (GGA) was different for various traits. In general, the A, cytoplasm showed a positive influence on GGA estimates for plant height, grain yield, and a negative influence on days to flowering. The variable magnitude of cytoplasmic effects on the GGA of lines indicated that such effects were the result of interaction between cytoplasm and nuclear genes.

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Effect of Cytoplasmic Source on the Combining Ability of Agronomic Traits in Pearl Millet

Yadav

1994

Plant Breeding

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“…Similarly two restorers (H90/4-5 and H77/833-2) were utilized in developing five hybrids. These facts indicate that outbreaks of downy mildew were due to a narrow genetic base among seed parents and restorers (Yadav et al, 1993;Yadav, 1996).…”

Section: Magnitude Of Variationmentioning

confidence: 99%

Assessment of Diversity in Commercial Hybrids of Pearl Millet in India

Yadav¹,

Rai²,

Yadav³

et al. 2016

Ind. Jour. Plant Gene. Resour.

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Availability of diverse cultivars is essential in order to meet necessity of regional adaptation to various climatic conditions and to fulfil the farmers' need of differential preference of various phenotypic traits in pearl millet. The present study attempted to quantify the degree of diversity in commercial hybrids of pearl millet and to understand the relationship among various phenotypic and quality traits. A total of 122 commercial hybrids were evaluated at three diverse locations. Results showed large variation for flowering time (42-58 days), tillering (1.1-4.4 panicles/plant), individual grain size (7.6-17.3 mg), plant height (185-268 cm), panicle length (20-33 cm) and grain yield (35-72 q/ha). Clustering of hybrids resulted in 7 distinct clusters, which highlighted the successful efforts of national programme of pearl millet improvement toward genetic diversification of hybrids. These results are discussed as to how this reported diversity has helped in extending the hybrid technology in some of the most difficult and diverse production ecologies. Phenology, tillering and height had significant influence on yields of hybrids. Taller hybrids provided higher yield. Hybrids with lesser duration and shorter height produced more tillers and tillering decreased with the increase in panicle length. The correlation of grain yield with Fe and Zn concentration in grains was not significant suggesting that both these micronutrients can be improved without significantly compromising on grain yield.

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“…Schroet.] was similar in hybrids carrying either A 1 male-sterile or B-cytoplasm [187], and there http://www.cababstractsplus.org/cabreviews was no effect of different CMS systems on expression of resistance to downy mildew [188]. The A 1 cytoplasm confers moderate susceptibility to smut (Tolyposporium penicillariae Brefeld), downy mildew, and leaf blight (Xanthomonas spp.)…”

Section: Effects Of Cms On Expression Of Resistance To Plant Diseasesmentioning

confidence: 99%

Implications of cytoplasmic male-sterility systems for development and deployment of pest resistant hybrids in cereals.

Dhillon¹,

Sharma²,

Smith³

2008

CABI Reviews

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The world population is increasing at an alarming rate, and there is a continued need to increase crop productivity to meet the food requirements. To meet the ever-increasing demand for food, cytoplasmic male-sterility (CMS) has been successfully exploited to develop hybrids for increasing crop production worldwide. However, large-scale cultivation of crop hybrids based on a single source of CMS may pose a serious challenge to sustainable crop production because of decreasing genetic diversity. This review analyses the potential for exploitation of different CMS systems for hybrid production, effects of CMS on various agronomic traits, and expression of resistance to insect pests and diseases in high-yielding hybrids of sorghum, maize, pearl millet, rice, wheat, and barley. Considerable information has been generated on the effects of CMS on physiology, yield, and agronomic characteristics of the plant. However, there is limited information on the effects of CMS on expression of resistance to insect pests and diseases. The available information indicates that the CMS lines are more susceptible to insect pests and diseases, and large-scale cultivation of hybrids based on a single source of CMS might result in pest outbreaks because of narrow genetic base. Therefore, there is a continuing need to evaluate various CMS systems in different genetic backgrounds for their effects on cultivar susceptibility to insect pests and diseases to develop strategies for large-scale deployment of pest-resistant hybrids on farmer's fields. Genetically engineered insect-resistant CMS lines can also be exploited to diversify the hybrid parents for sustainable crop production.

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Influence of A1 cytoplasmic substitution on the downy-mildew incidence of pearl millet

Cited by 20 publications

References 10 publications

Effect of Cytoplasmic Source on the Combining Ability of Agronomic Traits in Pearl Millet

Effect of Cytoplasmic Source on the Combining Ability of Agronomic Traits in Pearl Millet

Assessment of Diversity in Commercial Hybrids of Pearl Millet in India

Implications of cytoplasmic male-sterility systems for development and deployment of pest resistant hybrids in cereals.

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