Response of Fifteen Grain Sorghum Genotypes to Water Stress

2013 ◽  
Vol 17 (1) ◽  
pp. 107-124
Author(s):  
M. S. Radwan ◽  
R. I. A. El-Zanaty ◽  
M. A. El-Nahrawy ◽  
M. Abbas Abed
Keyword(s):  
Water Stress ◽  
Grain Sorghum ◽  
Sorghum Genotypes

scholarly journals Evaluation of Water Stress on Yield, Its Components and Some Physiological Traits at Different Growth Stages in Grain Sorghum Genotypes

2016 ◽  
Vol 8 (2) ◽  
pp. 204-210
Author(s):  
Ali AZARINASRABAD ◽  
Seyyed Mohsen MOUSAVINIK ◽  
Mohammad GALAVI ◽  
Seyyed Alireza BEHESHTI ◽  
Alireza SIROUSMEHR
Keyword(s):  
Water Stress ◽  
Stomatal Conductance ◽  
Canopy Temperature ◽  
Grain Sorghum ◽  
Physiological Traits ◽  
Stay Green ◽  
Use Efficiency ◽  
Chlorophyll Index ◽  
Sorghum Genotypes ◽  
Radiation Use

Investigation on yield improvement and development under drought condition using breeding techniques is difficult, due to the association with low heritability of specific traits. Even more, investigation of physiological indicators (stomatal conductance, chlorophyll index, relative water content, chlorophyll fluorescence, canopy temperature, radiation use efficiency, stay-green etc.) is of interest as they are more accessible, with a low cost, therefore these indicators of physiological traits can be used as good criteria in selecting valuable species. In order to evaluate the effects of water stress on grain yield, its components and some physiological traits of grain sorghum genotypes (Sorghum bicolor L.), a field experiment using split plot design with three replications was carried. The main plots included three water stress treatments: normal irrigation as control, halting irrigation at the stage of terminal leaf emergence and halting irrigation at the stage of 50% flowering. The sub-plots included 10 genotypes of sorghum (‘KGS29’, ‘MGS2’, ‘Sepideh’, ‘KGFS27’, ‘MGS5’, ‘KGFS5’, ‘KGFS17’, ‘KGFS13’ and ‘KGFS30’). Results showed that water stress significantly decreased grain yield and its components (1,000 seed weight, number of seed per panicle) and had various effects on physiological traits. The water stress increased canopy temperature and radiation use efficiency, while stomatal conductance, chlorophyll index (SPAD) and stay-green of genotypes were decreased; the maximum efficiency of photosystem II of photosynthesis remained unchanged between the treatments. Genotypes turned out to have significantly different responses to the drought treatments for all the studied traits, indicating the existence of a high variability among them. In general, physiological traits could be used as good indicators in water stress investigations and might provide comprehensive information as compared with morphological traits.

scholarly journals Seed Priming and Tolerance to Salt and Water Stress in Divergent Grain Sorghum Genotypes

2018 ◽  
Vol 09 (04) ◽  
pp. 606-616 ◽  
Author(s):  
Charles Lobo Pinheiro ◽  
Hellen Thayse Nascimento Araújo ◽  
Selma Freire de Brito ◽  
Marcos da Silva Maia ◽  
Jesimiel da Silva Viana ◽  
...  
Keyword(s):  
Water Stress ◽  
Seed Priming ◽  
Grain Sorghum ◽  
Sorghum Genotypes

scholarly journals Evaluation of Water Stress on Yield, Its Components and Some Physiological Traits at Different Growth Stages in Grain Sorghum Genotypes

2016 ◽  
Vol 8 (2) ◽  
Author(s):  
Ali AZARINASRABAD ◽  
Seyyed Mohsen MOUSAVINIK ◽  
Mohammad GALAVI ◽  
Seyyed Alireza BEHESHTI ◽  
Alireza SIROUSMEHR
Keyword(s):  
Water Stress ◽  
Grain Sorghum ◽  
Physiological Traits ◽  
Growth Stages ◽  
Sorghum Genotypes ◽  
Different Growth Stages

Spatial and temporal patterns of lodging in grain sorghum (Sorghum bicolor) in Australia

2020 ◽  
Vol 71 (4) ◽  
pp. 379
Author(s):  
Xuemin Wang ◽  
Emma Mace ◽  
Colleen Hunt ◽  
Alan Cruickshank ◽  
Graeme Hammer ◽  
...  
Keyword(s):  
Water Stress ◽  
Sorghum Bicolor ◽  
Southern Oscillation ◽  
Grain Sorghum ◽  
Spatial And Temporal Patterns ◽  
Lodging Resistance ◽  
Growing Seasons ◽  
Production Environments ◽  
Central Highlands ◽  
Sorghum Production

Grown in water-limited environments, sorghum (Sorghum bicolor (L.) Moench) is often exposed to water deficits of varying extent and timing. One of the impacts of water stress on sorghum production is lodging; however, there has been no published study quantifying the temporal and spatial frequency and severity of lodging in grain sorghum in Australia. In this study, we investigated the frequency and severity of lodging, using a dataset of 83 advanced yield-testing trials of the sorghum pre-breeding program grown in the seven major sorghum-production environments in Australia over 14 summer growing seasons. Lodging occurred in most production regions but with varying frequency and severity. Lodging was significantly greater in regions that were more prone to water stress (e.g. Central Highlands in Queensland) and significantly lower in regions that were less likely to suffer from water stress (e.g. Liverpool Plains in northern New South Wale) compared with the overall average across regions. The severity of lodging also varied across regions, with the most severe lodging (>20%) occurring in Central Highlands and Western Downs in Queensland. In addition, seasonal patterns of lodging frequency and severity were also observed. Over the 14 growing seasons, the frequency of lodging varied from 0% to 100%, with the most severe lodging (>20%) observed in 2005, 2016 and 2017. The Southern Oscillation Index explained 29% of the seasonal variation in lodging frequency. The findings of this study clearly support a link between lodging incidence and water stress across regions and seasons. Our data also showed that although there was a substantial turnover of commercial hybrids during the period of this study, the level of resistance to lodging appeared not to have improved. It is possible that this is due to plant breeders trading off improvements in lodging resistance to increase grain yield.

Mineral content of sorghum genotypes and the influence of water stress

2017 ◽  
Vol 214 ◽  
pp. 400-405 ◽  
Author(s):  
Caroline Liboreiro Paiva ◽  
Valéria Aparecida Vieira Queiroz ◽  
Maria Lúcia Ferreira Simeone ◽  
Robert Eugene Schaffert ◽  
Antônio Carlos de Oliveira ◽  
...  
Keyword(s):  
Water Stress ◽  
Mineral Content ◽  
Influence Of Water ◽  
Sorghum Genotypes

scholarly journals Phenotypic variability and correlation estimates for traits of Burkina Faso’ sweet grain sorghum genotypes

2020 ◽  
Vol 28 (4) ◽  
pp. 517-527
Author(s):  
N. Sawadogo ◽  
G. Naoura ◽  
M.H. Ouedraogo ◽  
M. Tonde ◽  
J. Tiendrebeogo ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Protein Content ◽  
Crude Protein ◽  
Phenotypic Variability ◽  
Genetic Correlations ◽  
Grain Sorghum ◽  
Crude Protein Content ◽  
Biochemical Traits ◽  
The Status ◽  
Sorghum Genotypes

Sweet grain sorghum [Sorghum bicolor (L.) Moench] is a neglected crop mainly grown for its sweet grains in the pasty form. Although its taste is the main character of interest, knowledge of protein related content of the grain, especially when linked to its value for infant porridge appears equally important. The objective of this study was to evaluate the status of crude protein content of pasty grains and to determine genetic correlations between morphological and biochemical traits among sweet grain of sorghum genotypes in Burkina Faso. Eight sweet grain sorghum cultivars (BTO2, BZI1, KBZ4, PBO5, PGO3, SBR7, SPI2, STO4) were evaluated through 13 morphological and two biochemical variables. Crude protein content of these genotypes was also compared with the composition of two controls of sweet stalk sorghum (ETS) and ordinary grain sorghum or common sorghum (EBS). The analysis of variance revealed variability within sweet grain sorghum accessions, mainly on the biochemical traits (crude protein and water content) and two morphological traits (peduncle and panicle lengths), which discriminated significantly in the thresholds of 1 and 5%, respectively. In addition, sweet grain sorghum had low crude protein content compared to other types of sorghum, except, two genotypes of sweet grain sorghum (BZI1 and STO4) which recorded higher protein content compared to the common sorghum. An important and negative correlation was noted between sowing-flowering cycle and protein content.

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