Sowing date and boll position affected boll weight, fiber quality and fiber physiological parameters in two cotton (Gossypium Hirsutum L.) cultivars

Zhao, Wenqing; Wang, Youhua; Shu, Hongmei; Li, Jian; Zhou, Zhiguo

doi:10.5897/ajar12.025

Cited by 17 publications

(8 citation statements)

References 30 publications

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“…Buttar et al (2010) also reported that NM, sympods, and plant height could not vary significantly in different sowing environments. Zhao et al (2012) and Jamro et al (2017) also reported similar type of results. It showed that the performance and productivity of upland cotton can be higher when the crop is sown on or before the normal sowing time (before May 10).…”

Section: Discussionsupporting

confidence: 53%

Identification of Novel Marker–Trait Associations for Lint Yield Contributing Traits in Upland Cotton (Gossypium hirsutum L.) Using SSRs

et al. 2021

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Improving the yield of lint is the main objective for most of the cotton crop improvement programs throughout the world as it meets the demand of fiber for textile industries. In the current study, 96 genotypes of Gossypium hirsutum were used to find novel simple sequence repeat marker-based associations for lint yield contributing traits by linkage disequilibrium. Extensive phenotyping of 96 genotypes for various agronomic traits was done for two consecutive years (2018 and 2019) in early, normal, and late sown environments. Out of 168 SSR markers screened over the 96 genotypes, a total of 97 polymorphic markers containing 293 alleles were used for analysis. Three different models, i.e., mixed linear model (MLM), compressed mixed linear model (CMLM), and multiple locus mixed linear model (MLMM), were used to detect the significant marker–trait associations for six different environments separately. A total of 38 significant marker–trait associations that were common to at least two environments were considered as promising associations and detailed annotation of the significant markers has been carried out. Twenty-two marker–trait associations were found to be novel in the current study. These results will be very useful for crop improvement programs using marker-assisted cotton breeding.

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Section: Discussionsupporting

confidence: 53%

Identification of Novel Marker–Trait Associations for Lint Yield Contributing Traits in Upland Cotton (Gossypium hirsutum L.) Using SSRs

et al. 2021

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“…This might due to relatively low temperature of air and at the beginning of the season for early planting (Table 1), which directed the cotton plants to keep the balance between vegetative growth and fruiting capacity while, in late planting, the increase of air and soil temperature. Such findings are in harmony with those obtained by Hamed (2011), Ismail et al (2012, Wenqing et al (2012), Elayan et al (2013) and Elayan et al (2015).…”

Section: Discussionsupporting

confidence: 91%

Performance Evaluation of Three Egyptian Cotton Genotypes under Different Thermal Units Related to Different Planting Dates

Mahdi

Khalifa²,

Taha

2019

Egypt. J. Agron.

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F ARMERS are often unable to determine the effect of different environmental stress on growth and development of cotton plants. So, the experiment conducted through a wide range of thermal changes by planting cotton at different dates. This work aimed to performance evaluation of some Egyptian cotton genotypes i.e., Giza 90, Giza 90 x Aust. and Giza 95 under different thermal units related to different planting dates i.e., 1 st April, 16 th April and 1 st May. The results demonstrated that late planting led to decreasing plant height, number of leaves/ plant and leaf area/plant. Number of fruiting/plant increased in early planting due to lowered of node of the first sympodium and inducing early balance between vegetative and fruiting. Low temperatures at the beginning of the season and the decrease the number of thermal units in early planting led to increase concentration of chlorophyll a, b and carotenoids in leaves and increase earliness index. Late planting produced the first flower and first open boll in shorter period as compared to early planting, but it consumed more number of heat units. Yield and its quality have increased in early planting where utilized the heat units in producing the highest number of open bolls and enhance cotton fiber properties conversely late planting which used most of the heat units in increasing the vegetative growth. Giza 95 surpassed in all studied characters compared to other genotypes. The efficiency of Egyptian cotton genotypes particularly Giza 95 for use of air thermal units increased in early planting. From the results above, it could be concluded that early planting maximized of the use of heat units by increasing the efficiency use of air thermal units through the growing season which lowered the amount of heat units for necessary production one boll.

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“…Shorter plants are always having lower maintenance respiration than longer ones. The obtained results are in agreement with those recorded by Reddy et al (1999), El-Sayed (2005), Emara et al (2009) and Wenqing et al (2012) and in disagreement with Boquet et al ( 2003). The present data also show that the growth regulator PIX at 50 ppm followed by IAA 50 ppm exhibited high value and did not differ significantly in the mean performance of boll weight (2.58 ,2.65) and (2.44 ,2.55) in (2010 and 2011), respectively, while NAA at 30 ppm exhibited lower value of mean performance of boll weight.…”

Section: Boll Weightsupporting

confidence: 89%

“…This might be due to relatively low night temperature of early planting date at the beginning of the season which prolonged the period of the appearance of the first bud, flowering and bolling. Similar results were obtained by Emara et al (2006), Abd El-Twab ( 2009) and Wenqing et al (2012). Data also showed that the mean performance of PIX growth regulators at 50 ppm was superior in phenologyical stage which gave the best reading in all No.…”

Section: Days To First Bud Flower and Open Bollsupporting

confidence: 88%

“…Zhiguo et al (2011) reported that, early sowing dates significantly increased fiber strength. Wenqing et al (2012) revealed that planting cotton early on (27 April) had significantly increased the number of sympodia on the main-stem, the number of open bolls per plant, boll weight, seed index,, lint percentage, earliness percentage and seed cotton yield, per plant and feddan, as compared with late sowing on (25 May).…”

Section: Introductionmentioning

confidence: 98%

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Effect of Some Growth Regulators Under Different Planting Dates on Growth and Yield of Cotton

Elayan

Abdallah

Elsayed³

et al. 2013

Egyptian Journal of Agricultural Sciences

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This study was carried out at the Experiment and Research Station, Faculty of Agriculture, Cairo University, Giza in two growing seasons (2010 and 2011) to study the effect of three sowing dates; (25 March, 25 April, and 25 May) and some growth regulators i.e.,(Indole acetic acid (IAA) at the rates of 50, 100 and I50 ppm, Naphthalene acetic acid (NAA) at the rates of 10, 20 and 30 ppm and Mepiquate chloried (Pix) 50, 100 and I50 ppm) on Egyptian cotton cultivar (Giza 92). A split-plot design with three replicates was used, sowing dates were allocated in the main plot while growth regulators in the sub plot. Obtained results could be summarized as follows:-Sowing date had significant effect on growth characters, yield, yield components and technological properties. Whereas, delayed sowing date tended to increase significantly the plant height, no. of days to 1 st bud, 1 st flower and 1 st open boll. Planting cotton in 25 March was superior in the no. of sympodial branches / plant, seed index, earliness percentage, seed cotton yield /feddan and fiber properties such as fiber length, uniformity ratio, fiber elongation, fiber strength, micronaire reading, brightness and yellowness.Growth regulators significantly affected all growth and yield characters under study. Use of 50 ppm PIX was superior in the no. of days to 1 st bud, 1 st flower and 1 st open boll, seed index, earliness percentage and seed cotton yield /feddan, while 30 ppm NAA was superior in plant height. Fiber properties were not significantly affected by growth regulators in all characters under study in both seasons.The interaction between sowing dates and growth regulators significantly affected in most characters under study whereas, the use of 50 ppm PIX and planting in 25 March or 25 April was superior in the no. of sympodial branches / plant, no. of open bolls / plant, seed index, earliness percentage and seed cotton yield /feddan in the first season, while in the second one the use of 50 or 100 ppm PIX with sowing in 25 March gave the best reading in yield and yield components.

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Sowing date and boll position affected boll weight, fiber quality and fiber physiological parameters in two cotton (Gossypium Hirsutum L.) cultivars

Cited by 17 publications

References 30 publications

Identification of Novel Marker–Trait Associations for Lint Yield Contributing Traits in Upland Cotton (Gossypium hirsutum L.) Using SSRs

Identification of Novel Marker–Trait Associations for Lint Yield Contributing Traits in Upland Cotton (Gossypium hirsutum L.) Using SSRs

Performance Evaluation of Three Egyptian Cotton Genotypes under Different Thermal Units Related to Different Planting Dates

Effect of Some Growth Regulators Under Different Planting Dates on Growth and Yield of Cotton

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