scholarly journals Effect of Waterlogging on Carbohydrate Metabolism and the Quality of Fiber in Cotton (Gossypium hirsutum L.)

2016 ◽  
Vol 7 ◽  
Author(s):  
Jie Kuai ◽  
Yinglong Chen ◽  
Youhua Wang ◽  
Yali Meng ◽  
Binglin Chen ◽  
...  
2018 ◽  
Vol 9 (3) ◽  
pp. 465-474 ◽  
Author(s):  
Pablo Radamés Cabral de França ◽  
Francisco De Assis Cardoso Almeida ◽  
Odilon Reny Ribeiro Ferreira da Silva ◽  
Jeane Ferreira Jerônimo

The removal of lint from cotton seeds is mainly carried out through chemical delinting, but it is an expensive procedure and requires high technology. The objective was to evaluate the physiological quality of Gossypium hirsutum L. seeds delinted by flaming using a thermal delinter prototype. Cotton seeds BRS 286 were flamed in nine settings intensities and compared to chemical delinting and seeds with lint. We analyzed the water content, germination, first count, germination speed index (GSI), length and dry mass of roots and shoots. Using a completely randomized design and the means were compared by Scott-Knott test at 5% probability. In evaluating, the germination percentage did not differ between treatments with chemical and thermal low intensity delinting compared to the control. In vigor tests were observed higher mean values of the chemical treatment to the other treatments, except in GSI test and root dry weight when subjected to thermal delinting of low and medium intensity. The delinting made through the prototype enables efficient results, as well as the chemical delinting with sulfuric acid, without affecting germination and vigor when flamed with low and middle intensity, regardless of the number of active burners.


Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 209 ◽  
Author(s):  
Francisco Italo Gomes Paiva ◽  
Marcelo Tavares Gurgel ◽  
Francisco De Assis de Oliveira ◽  
Lucas Ramos Da Costa ◽  
Andygley Fernandes Mota ◽  
...  

QUALIDADE DA FIBRA DO ALGODOEIRO BRS VERDE IRRIGADO COM ÁGUAS DE DIFERENTES NÍVEIS SALINOS FRANCISCO ITALO GOME PAIVA1; MARCELO TAVARES GURGEL2; FRANCISCO DE ASSIS DE OLIVEIRA3 ANDYGLEY FERNANDES MOTA4;LUCAS RAMOS DA COSTA 5; HERMINIO SABINO DE OLIVEIRA JUNIOR6 1Engenheiro Agrônomo, Mestrando em Manejo de solo e agua – UFERSA/RN, [email protected];2 Engenheiro Agrônomo, Prof. Doutor, Manejo solo e agua – UFERSA/RN, [email protected];3Engenheiro Agrônomo, Prof. Doutor, Manejo solo e agua – UFERSA/RN, [email protected];4Engenheiro Agrônomo, Mestre, Doutorando, UFCG – Campina Grande/PB, [email protected];5Engenheiro Agrônomo, Mestre, Doutorando – UFERSA/RN, [email protected];6Gestor Ambiental, Mestre – UFERSA/RN, [email protected].  1 RESUMO As fibras de algodão representam em torno de 80% das fibras utilizadas nas fiações brasileiras. Nesse contexto, o objetivo do presente estudo foi avaliar a qualidade da fibra do algodoeiro BRS verde, usando níveis de salinidade da água de irrigação. O experimento foi realizado em condições de campo na Fazenda Experimental Rafael Fernandes, de propriedade da Universidade Federal Rural do Semiárido­–UFERSA no período 21/10/11 até 06/02/12. O delineamento experimental adotado foi em blocos casualizados com seis tratamentos e cinco repetições, totalizando 30 parcelas experimentais. Os tratamentos resultaram das combinações de três tipos de condutividade elétrica da água de irrigação (S1- 0,55; S2-2,16 e S3-3,53 dS m-1) de acordo com as fases de desenvolvimento da cultura (T1- S1S1S1; T2- S2S2S2; T3- S3S3S3; T4- S1S2S2; T5- S1S2S3 e T6- S1S3S3), sendo a primeira fase do semeio até 30 dias; a segunda fase inicia-se dos 31 aos 90 dias; e a terceira fase dos 91 a colheita. As variáveis analisadas foram: porcentagem de fibra, comprimento da fibra, uniformidade do comprimento, maturidade, resistência, índice micronaire, índice de fibras curtas, elongação de ruptura e índice de fiabilidade. No geral, não houve efeito da salinidade da água de irrigação sobre a qualidade de fibra do algodão BRS verde, exceto para a característica elongamento da ruptura (ELG). Deste modo, torna-se viável o uso de água com salinidade de (3,5 dS m-1) em todo o ciclo da cultura considerando as condições de realização do estudo. Palavras-chave: Gossypium hirsutum L.. Condutividade elétrica. Características tecnológicas da fibra.  PAIVA,F.I.G.;GURGEL,M.T.;OLIVEIRA,F.A.;MOTA,A.F.;COSTA,L.R.;JUNIOR,H.S.EQUALITY OF COTTON FIBER BRS GREEN IRRIGATED WITH DIFFERENT SALT LEVELS    2 ABSTRACT Cotton fibers represent around 80% of the fibers used in spinning mills in Brazil. In this context, the aim of this study was to evaluate the quality of the cotton fiber BRS green, using salinity levels of irrigation water. The experiment was conducted under field condition sat the Experimental Farm Rafael Fernandes, owned by Federal Rural University of the semiarid – UFERSA the period 21/10/11 to 06/02/12. The treatments consisted of combinations of three types of electrical conductivity of irrigation water (S1- 0,55; S2-2,16 and S3-3,53 dS m-1) according to the development stages of culture T1- S1S1S1; T2- S2S2S2; T3- S3S3S3; T4- S1S2S2; T5- S1S2S3; T6- S1S3S3, the first phase being 30 days from the sowing; the second stage starts from 31 to 90 days; and the third phase of the 91 harvest. The variables analyzed were: fiber percentage, fiber length, length uniformity, maturity, strength, micronaire, short fiber index, elongation at break and reliability index. Overall, there was no effect of irrigation water salinity on the fiber quality of cotton BRS green, except for the elongation characteristic of rupture (ELG). Thus, it becomes feasible to use water with salinity (3,5 dS m-1) throughout the crop cycle considering the conditions of the study. Keywords: Gossypium hirsutum L.. Electrical conductivity. technological characteristics of the fiber.


Agronomy ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 186 ◽  
Author(s):  
Huaizhu Li ◽  
Lingling Dou ◽  
Wei Li ◽  
Ping Wang ◽  
Qin Zhao ◽  
...  

Gossypium hirsutum L. is a worldwide economical crop; however, premature leaf senescence reduces its production and quality which is regulated by stresses, hormones, and genes. DNA binding with the one zinc finger (Dof) transcription factors (TFs) participate widely in plant development and responses to biotic and abiotic stresses, but there have been few reports of these TFs in cotton. Here, we perform a genome-wide study of G. Hirsutum L. Dof (GhDof) genes and analyze their phylogeny, duplication, and expression. In total, 114 GhDof genes have been identified and classified into nine subgroups (A, B1, B2.2, B2.1, C1, C2.1, C2.2, D1, and D2) based on phylogenetic analysis. An MCScanX analysis showed that the GhDof genes expanded due to segmental duplications. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis showed that GhDofD9.6 was not only differentially expressed between CCRI10 (with premature senescence) and Liao4086 (without premature senescence) but also responded to salinity stress; GhDofA5.7, GhDofA7.4, GhDofA8.2, GhDof11.1, GhDofD7.2, and GhDofD11.3 signfificantly responded to cold (4 °C) stress. This work lays the foundation for further analysis of the function of GhDof genes in G. hirsutum, which will be helpful for improving the production and quality of cotton.


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