Photosynthate transport rather than photosynthesis rate is critical for low potassium adaptation of two cotton genotypes

2015 ◽  
Vol 66 (2) ◽  
pp. 170-177 ◽  
Author(s):  
Yanshu Hao ◽  
Jing Lei ◽  
Xiuwen Wu ◽  
Lishu Wu ◽  
Cuncang Jiang
Keyword(s):  
Photosynthesis Rate ◽  
Potassium Adaptation ◽  
Low Potassium ◽  
Cotton Genotypes

scholarly journals Impacts of Verticillium Wilt on Photosynthesis Rate, Lint Production, and Fiber Quality of Greenhouse-Grown Cotton (Gossypium hirsutum)

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 857
Author(s):  
Addissu G. Ayele ◽  
Terry A. Wheeler ◽  
Jane K. Dever
Keyword(s):  
Verticillium Wilt ◽  
Photosynthetic Rate ◽  
Fiber Quality ◽  
Short Fiber ◽  
Fiber Content ◽  
Photosynthesis Rate ◽  
Breeding Lines ◽  
Fiber Properties ◽  
Cotton Genotypes ◽  
Disease Pressure

Verticillium wilt, caused by Verticillium dahliae Kleb., leads to significant losses in cotton yield and fiber quality worldwide. To investigate Verticillium wilt impact on photosynthesis rate, yield, and fiber quality, six upland cotton genotypes, namely Verticillium susceptible (DP 1612 B2XF) and partially resistant (FM 2484B2F) commercial cultivars and four breeding lines, were grown to maturity under greenhouse conditions in soil either infested or not infested with V. dahliae microsclerotia. Photosynthetic rate, lint, and seed yield were all higher (p < 0.05) for FM 2484B2F than DP 1612 B2XF when infected with V. dahliae. When comparing healthy (H) to Verticillium wilt (VW) affected plants, fiber properties were greatly impacted. Micronaire decreased from 5.0 (H) to 3.6 (VW) with DP 1612 B2XF and 4.4 (H) to 4.1 (VW) with FM 2484B2F. The maturity ratio decreased from 0.90 (H) to 0.83 (VW) for DP 1612 B2XF and was unchanged for FM 2484B2F (0.90). Fiber properties such as short fiber content, nep count, fineness, and immature fiber content were also significantly affected under Verticillium wilt pressure. With Verticillium wilt affected plants, lines 16-13-601V and 17-17-206V performed similarly to FM 2484B2F for photosynthetic rate, yield, and all fiber properties measured. When selecting for improved cultivars in the presence of Verticillium wilt, it is important to select for relatively unchanged fiber properties under disease pressure in addition to reduced disease severity and increased yield.

Adaptive Phenotypic Differences to Low Potassium Soil of Two Cotton Genotypes with Various Potassium-Use Efficiencies

2012 ◽  
Vol 43 (15) ◽  
pp. 1984-1993
Author(s):  
Yong Tao ◽  
Li Wang ◽  
Xiao Wang ◽  
Ying Xia ◽  
Kaiyuan Wan ◽  
...  
Keyword(s):  
Phenotypic Differences ◽  
Low Potassium ◽  
Cotton Genotypes

Modeling of photosynthesis light curves by linear splines

2019 ◽  
pp. 20-29
Author(s):  
Alexander S. Lelekov ◽  
Rudolf P. Trenkenshu
Keyword(s):  
Experimental Data ◽  
Chlorophyll A ◽  
Skeletonema Costatum ◽  
Light Flux ◽  
Photosynthesis Rate ◽  
Light Curves ◽  
External Irradiation ◽  
Exchange Reactions ◽  
Cell Adaptation ◽  
Linear Splines

The paper presents an example of the linear splines use to describe the photosynthesis light curves for microalgae culture. The main mathematical models of the relationship between photosynthesis rate and light are listed. Based on the previously formulated basic principles of modeling microalgae photobiosynthesis, a mathematical model is proposed that describes the dependence of the assimilation number of chlorophyll a on the value of the light flux by linear splines. The advantage of the proposed approach is a clear definition of the point of change of the limiting factor. It is shown that light-limited photosynthesis rate is determined not only by external irradiation, but also by the concentration of chlorophyll a. The light-saturated rate depends on the amount of a key enzyme complex, which limits the rate of energy exchange reactions in the cell. Verification of the proposed model on the example of the diatom microalgae Skeletonema costatum was carried out. It is shown that the higher the degree of cell adaptation to high irradiation, the better the photosynthesis curve is described by linear splines. If S. costatum cells are adapted to low irradiation, deviations of experimental data from the idealized broken line are observed, which are caused by changes in the pigment composition. When the experimental data are normalized, the cell adaptation factor is reduced, all points are described by a single broken line, which indicates the universality of the proposed approach.

Attracting ability of medium-fiber cotton genotypes bolls and their yield

2019 ◽  
Vol 1 (4) ◽  
pp. 23-27
Author(s):  
Saidzhamol T. Saidov ◽  
Viktor A. Dragavtsev ◽  
Asliddin T. Sadikov
Keyword(s):  
Cotton Genotypes ◽  
Selection Of

This article presents the results of determining the attracting ability of the whole box and the degree of its differences depending on the genotypes, as well as its prospects for solving practical problems of selection of medium-fiber cotton. Consequently, among the genotypes studied by us, a significant amount of the attractive ability of a single box, the value of attraction and the mass of raw cotton per box differed in 10 combinations, which are economically the most productive.

Studying of economically valuable traits of introgressivе genotypes of upland cotton

2019 ◽  
Vol 1 (3) ◽  
pp. 17-20
Author(s):  
Asliddin T. Sadikov
Keyword(s):  
Comparative Analysis ◽  
Upland Cotton ◽  
Economically Valuable Traits ◽  
Cotton Genotypes ◽  
Standard Cultivar

Some economically valuable traits of upland cotton genotypes are being considered in comparison with standard cultivar “Hisor”. Based on the results, it was established that the yield of raw cotton for all studied genotypes is 66.4-100.1 g/plant. In a comparative analysis of highly productive genotypes, 3 genotypes were distinguished – ALC-86/6 x Sorbon, DP-4025 x Dusti-IZ, NAD-53 x Sorbon, varying from 95.0 to 100.1 g/plant, exceeding the standard cultivar “Hisor” (40,8 g/plant) by 54,2-59,3 g/plant.

Influence of Cotton Genotypes on Floral Visits of Honey Bees 1

Crop Science ◽  
1975 ◽  
Vol 15 (6) ◽  
pp. 782-784 ◽  
Author(s):  
Joseph O. Moffett ◽  
Lee S. Stith ◽  
Chris C. Burkhardt ◽  
Charles W. Shipman
Keyword(s):  
Honey Bees ◽  
Cotton Genotypes

Comprehensive model of microalgae photosynthesis rate as a function of culture conditions in photobioreactors

2013 ◽  
Vol 97 (17) ◽  
pp. 7627-7637 ◽  
Author(s):  
T. A. Costache ◽  
F. Gabriel Acién Fernández ◽  
M. M. Morales ◽  
J. M. Fernández-Sevilla ◽  
I. Stamatin ◽  
...  
Keyword(s):  
Culture Conditions ◽  
Photosynthesis Rate ◽  
Comprehensive Model
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