Association analysis of photoperiodic flowering time genes in West and Central African sorghum [Sorghum bicolor (L.) Moench]

The experiment was conducted in Centro Nacional de Investigaciones in Maracay, Aragua, Venezuela. The goal of this job was determining the efficacy of some fungicides in controlling sorghum honeydew (Sphacelia sorghi McRae). A completely block randomized with four replications was used. Three systemic triazol fungicides were used and two non triazoles were included. Each dose was subdivided in three applications: 1/4 applied at panicle pre-emergence, 1/2 applied at 50 % flowering time and 1/4 applied at postflowering time, in order to cover the whole flowering period. The variables were: incidence or infected panicles per plot, panicle infection and the total infection/ plot. According to the results there was an overall good fungicide control. There was a group constituted by Tilt and Propizole, which gave the best fungus control with 96.96 and 96.55% of effectivity in controlling of panicles’ infection and a second group was integrated by Anvil, Benlate and Plantvax which made adequate control with no significant differences among them. In conclusion, the best fungicides were Tilt and Propizole. Benlate and Plantvax gave an adequate control but they are recommended under low inoculum pressure in order to avoid resistence and for economic reasons. Anvil showed 90.43% control; however, this fungicide has low relative efficacy when it is compared with other triazol fungicides.

Download Full-text

Genome Wide Association Analysis of Acid Detergent Fiber Content of 206 Forage Sorghum (Sorghum Bicolor (L.) Moench) Accessions

10.21203/rs.3.rs-551963/v1 ◽

2021 ◽

Author(s):

Hao Niu ◽

Yuanhuai Han ◽

junai ping ◽

Yubin Wang ◽

Xin Lv ◽

...

Keyword(s):

Sorghum Bicolor ◽

Association Analysis ◽

Plant Material ◽

Fiber Content ◽

Genome Wide Association ◽

Acid Detergent Fiber ◽

Forage Sorghum ◽

Genome Wide ◽

The World ◽

Sorghum Bicolor L

Abstract Forage Sorghum (Sorghum bicolor (L.) Moench) is an annual gramineous forage, which is a high-quality C4 crop. It is widely planted with Forage Maize in the world, especially in the developed countries of animal husbandry. Many of its important physiological characteristics vary with germplasm and growth environment. Acid detergent fiber is a kind of carbohydrate insoluble in acid detergent in plant material or feed containing plant material, including pure cellulose and acid cellulose. Acid detergent fiber widely exists in the stem and leaf tissues of forage sorghum, which is the main substance affecting the digestibility of livestock. It has a very important impact on the milk yield and quality of cows, dairy sheeps and pigs. In order to further understand its genetic mechanism, we re-sequenced 206 Forage Sorghum Germplasms from different regions of the world and identified 14,570,430 SNPs and 1,967,033 indels. Based on SNP markers, we analyzed the population genetic structure and identified the gene loci related to acid detergent fiber content by genome-wide association analysis (GWAS). Genetic relationship between materials showed that Asian and American sorghum varieties, breeding lines and improved varieties were more diverse, while European varieties were relatively more closely related. These findings provide new clues and directions for further study. Eight QTLs harboring 91 genes were found to be associated with acid detergent fiber content. These genes were significantly enriched into 6 major genes involved in cell membrane material transport or enzymes, showing a regional distribution. This finding provides a basis for us to understand the origin and spread of haplotypes related to acid detergent fiber content, which would accelerate the study of genetic gain of acid detergent fiber content, and help breeders improve feed quality and stress tolerance of forage sorghum.

Download Full-text

Use of Azospirillum irakense as bio fertilizer for sorghum (Sorghum bicolor L.)

Basrah Journal of Agricultural Sciences ◽

10.33762/bagrs.2012.54757 ◽

2012 ◽

Vol 25 (1) ◽

pp. 139-148

Author(s):

Thaher A. Taha

Keyword(s):

Sorghum Bicolor ◽

Sorghum Bicolor L

Download Full-text

Drought Resistance Mechanism and Adaptation to Water Stress in Sorghum [Sorghum bicolor (L.) Moench]

International Journal of Bio-resource and Stress Management ◽

10.23910/ijbsm/2018.9.1.3c0472 ◽

2018 ◽

Vol 9 (1) ◽

pp. 167-172

Author(s):

Rajani Verma ◽

◽

Ramesh Kumar ◽

Dr. Anamika Nath ◽

◽

...

Keyword(s):

Water Stress ◽

Sorghum Bicolor ◽

Drought Resistance ◽

Resistance Mechanism ◽

Sorghum Bicolor L

Download Full-text

Consórcio palma-sorgo sob lâminas de irrigação: balanço de água no solo e coeficientes da cultura

Agrometeoros ◽

10.31062/agrom.v27i2.26448 ◽

2020 ◽

Vol 27 (2) ◽

Author(s):

Cleber Pereira Alves ◽

Thieres George Freire Silva ◽

Hygor Kristoph Muniz Nunes Alves ◽

Alexandre Maniçoba da Rosa Ferraz Jardim ◽

Luciana Sandra Bastos de Souza ◽

...

Keyword(s):

Sorghum Bicolor ◽

Sorghum Bicolor L

Objetivou-se neste estudo quantificar a evapotranspiração real (ETr) e máxima da cultura (ETc) e os coeficientes da cultura (Kc) do consórcio palma-sorgo. O experimento foi conduzido no município de Serra Talhada, PE. O delineamento usado foi em blocos ao acaso, envolvendo cinco lâminas de irrigação (0, 25, 50, 75 e 100% da evapotranspiração de referência - ETo), sob sistema de cultivo consorciado palma-sorgo. O clone de palma forrageira utilizado foi a Orelha de Elefante Mexicana (Opuntia stricta (Haw.) Haw.) e o cultivar de sorgo, Sorghum bicolor (L.) Moench, a SF 15. O sorgo foi conduzido durante dois ciclos (planta e rebrota) compreendidos em um ciclo anual da palma. A quantificação da ETr e da ETc foi realizada através do resíduo do balanço de água no solo (BAS) a cada 14 dias, com a mensuração dos componentes hidrodinâmicos. As determinações da ETc e do Kc foram realizadas com base na lâmina de 75% da ETo. Os componentes do BAS foram submetidos à análise de regressão, sendo testados modelos polinomiais. Com exceção da variação do armazenamento de água no solo, os demais componentes hidrodinâmicos do solo cultivado sob sistema consorciado palma-sorgo respondem linearmente ao aumento de lâminas de irrigação. A evapotranspiração média diária do consórcio palma-sorgo é igual a 3,0 mm dia-1, independentemente da lâmina de irrigação. Os coeficientes do consórcio palma-sorgo são iguais a 0,40, 0,68, 0,90 e 0,52 durante as fases I, II, III e IV de emissão de cladódios.

Download Full-text