Effects of Okra Leaf Shape on Boll Rot, Yield, and Other Important Characters of Upland Cotton, <i>Gossypium hirsutum</i> L.<sup>1</sup>

Andries, J. A.; Jones, J. E.; Sloane, L. W.; Marshall, John

doi:10.2135/cropsci1969.0011183x000900060009x

Cited by 51 publications

(33 citation statements)

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“…This panel consisted of the 384-member cotton diversity panel (39), plus 154 wild and landrace accessions, all of which were obtained from USDA Cotton Germplasm Collection (Dataset S1). Two sets of isolines were used in fine-mapping and/or in gene expression and VIGS studies, a BC 8 set that included all four leaf shapes in the Stoneville 213 background (40) and a BC 3 pair of normal and okra in the Stoneville 7A background (41).…”

Section: Methodsmentioning

confidence: 99%

Modifications to aLATE MERISTEM IDENTITY1gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutumL.)

Andres

Coneva

Frank

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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Leaf shape varies spectacularly among plants. Leaves are the primary source of photoassimilate in crop plants, and understanding the genetic basis of variation in leaf morphology is critical to improving agricultural productivity. Leaf shape played a unique role in cotton improvement, as breeders have selected for entire and lobed leaf morphs resulting from a single locus, okra (L-D 1 ), which is responsible for the major leaf shapes in cotton. The L-D 1 locus is not only of agricultural importance in cotton, but through pioneering chimeric and morphometric studies, it has contributed to fundamental knowledge about leaf development. Here we show that an HD-Zip transcription factor homologous to the LATE MERISTEM IDENTITY1 (LMI1) gene of Arabidopsis is the causal gene underlying the L-D 1 locus. The classical okra leaf shape allele has a 133-bp tandem duplication in the promoter, correlated with elevated expression, whereas an 8-bp deletion in the third exon of the presumed wild-type normal allele causes a frame-shifted and truncated coding sequence. Our results indicate that subokra is the ancestral leaf shape of tetraploid cotton that gave rise to the okra allele and that normal is a derived mutant allele that came to predominate and define the leaf shape of cultivated cotton. Virusinduced gene silencing (VIGS) of the LMI1-like gene in an okra variety was sufficient to induce normal leaf formation. The developmental changes in leaves conferred by this gene are associated with a photosynthetic transcriptomic signature, substantiating its use by breeders to produce a superior cotton ideotype. cotton | leaf shape | okra | gene cloning

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Section: Methodsmentioning

confidence: 99%

Modifications to aLATE MERISTEM IDENTITY1gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutumL.)

Andres

Coneva

Frank

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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“…While the effects of these leaf shapes on cotton yield, quality, disease susceptibility, canopy temperature and water use have been the subject of numerous research efforts, the results have sometimes been contradictory and the value of okra-shaped leaves in production is not universally recognized [10][11][12][13]. Heitholt et al [12] summarized a number of possibly desirable characteristics of okra-leaf type cottons.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Canopy Temperatures for Normal and Okra Leaf Cotton under Variable Irrigation in the Field

2016

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Temperature affects a number of physiological factors in plants and is related to water use, yield and quality in many crop species. Seasonal canopy temperature, measured with infrared thermometers, is often used in conjunction with environmental factors (e.g., air temperature, humidity, solar radiation) to assess crop stress and management actions in cotton. Normal and okra leaf shapes in cotton have been associated with differences in water use and canopy temperature. The okra leaf shape in cotton is generally expected to result in lower water use and lower canopy temperatures, relative to normal leaf, under water deficits. In this study canopy temperatures were monitored in okra and normal leaf varieties for a growing season at four irrigation levels. Differences in canopy temperature (<2 • C) were measured between the two leaf shapes. As irrigation levels increased, canopy temperature differences between the leaf shapes declined. At the lowest irrigation level, when differences in sensible energy exchanges due to the okra leaf shape would be enhanced, the canopy temperature of the okra leaf was warmer than the normal leaf. This suggests that varietal differences that are not related to leaf shape may have more than compensated for leaf shape differences in the canopy temperature.

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“…This less disease incidence, less number of infected leaves and the lower number of enations in wider spaced plants (less leaf canopy) was due to more light penetration which resulted in more photosynthesis and enhanced assimilation of the carbohydrates (Andries et al, 1969).…”

Section: Discussionmentioning

confidence: 99%

Infestation of Cotton Leaf Curl Virus in two Bt Cotton Cultivars under Different Sowing Methods and Plant Spacing Systems

Hussain¹

2017

IJAB

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Cotton production is integral to economic development of Pakistan. However, cotton leaf curl virus (CLCuV) infestation affects the growth and productivity of cotton, and has been causing serious yield losses for the last two decades. Transgenic Bt varieties have resistance against CLCuV and can produce the high yield. This experiment was conducted to evaluate the effect of different sowing methods (flat sowing and bed sowing) and plant spacing (22.5 and 30 cm) on CLCuV infestation, whitefly population and growth and yield of two Bt cultivars viz. AA-703 and FH-113 during 2010 and again in 2011. The experiment was laid out in a split-split plot design with three replications. The average of the two years' results showed that there was 78% CLCuV incidence in 30 cm spacing as compared to 85% incidence in 22.5 cm spacing. However, cotton crop grown at narrow spacing with higher plant population (44444 plants ha -1 ) produced 17% higher seed cotton yield than wider spacing with lower plant population (33333 plants ha -1 ). The sowing methods did not significantly affect the disease incidence nonetheless the seed cotton yield of bed sown crop was 21% higher than the flat sown cotton crop. Cultivar AA-703 produced 14% higher seed cotton yield than cultivar FH-113 due to low disease infestation, higher boll weight and more number of bolls. The net profit (Rs. 102577 ha -1 ) and benefit cost ratio (1.65) indicated that cotton cultivar AA-703 sown on beds at plant spacing of 22.5 cm could produce the maximum seed cotton yield.

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Effects of Okra Leaf Shape on Boll Rot, Yield, and Other Important Characters of Upland Cotton, Gossypium hirsutum L.¹

Cited by 51 publications

References 0 publications

Modifications to aLATE MERISTEM IDENTITY1gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutumL.)

Modifications to aLATE MERISTEM IDENTITY1gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutumL.)

Seasonal Canopy Temperatures for Normal and Okra Leaf Cotton under Variable Irrigation in the Field

Infestation of Cotton Leaf Curl Virus in two Bt Cotton Cultivars under Different Sowing Methods and Plant Spacing Systems

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Effects of Okra Leaf Shape on Boll Rot, Yield, and Other Important Characters of Upland Cotton, Gossypium hirsutum L.1

Cited by 51 publications

References 0 publications

Modifications to aLATE MERISTEM IDENTITY1gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutumL.)

Modifications to aLATE MERISTEM IDENTITY1gene are responsible for the major leaf shapes of Upland cotton (Gossypium hirsutumL.)

Seasonal Canopy Temperatures for Normal and Okra Leaf Cotton under Variable Irrigation in the Field

Infestation of Cotton Leaf Curl Virus in two Bt Cotton Cultivars under Different Sowing Methods and Plant Spacing Systems

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About

Effects of Okra Leaf Shape on Boll Rot, Yield, and Other Important Characters of Upland Cotton, Gossypium hirsutum L.¹