Effect of Water Stress on Grain Yield and Yield Stability of Twenty Grain Sorghum Genotypes

2013 ◽  
Vol 17 (3) ◽  
pp. 1-18
Author(s):  
K. M. Mahmoud ◽  
H. I. Ali ◽  
A. A. Amir
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Grain Sorghum ◽  
Yield Stability ◽  
Effect Of Water ◽  
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.

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 EFFECT OF WATER STRESS ON YIELD AND YIELD COMPONENTS OF BREAD WHEAT GENOTYPES.

2017 ◽  
Vol 48 (3) ◽  
Author(s):  
Mohammed & Kadhem
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Bread Wheat ◽  
Yield Components ◽  
Block Design ◽  
Research Station ◽  
Stress Treatment ◽  
Wheat Genotypes ◽  
Effect Of Water ◽  
Yield And Yield Components

A field experiment was conducted during 2014 -2015 and 2015-2016 seasons at the  Field Crops Research Station Abu Ghraib, to study the effect of water stress, on yield and yield components of  bread wheat genotypes .The water stress treatment were 25% (S1) and 75% (S2) depletion of soil available water . The experiments was conucted using a split plot with in arrangement Randomized Complete Block Design with three replications. Water stress treatments were assigned to the main-plot, while, 27 wheat genotypes  were assigned to sub-plots. The results indicated that water stress treatment (S2)  significantly decreased  the number of spikes m-2,  number of grain.spike-1, 1000 grain weight and grain yield. The genotypes showed a differences in all characters studied. The genotype 26 produced the highest number of spikes m-2(355.8) and did not significantly differ from Bohooth10 347.2 spike.m-2.The Bohooth10 gave highest in the number of grain spike-1 (62.07) . The genotype 25 produced the highest weight of 1000 grains (40.05,37.09 gm)The genotype 26 produced highest grain yield (6.117 and 5.074 ton h-1 ) for two seasons, respectively but differed significantly from IPA99 which gave lowest  grains yield ( 3.395 and 3.020 Tun.h-1) for two seasons respectively.

scholarly journals Yield Stability of Sweet Sorghum Genotypes for Bioenergy Production Under Contrasting Temperate and Tropical Environments

2018 ◽  
Vol 10 (12) ◽  
pp. 42
Author(s):  
Diana-Abasi Udoh ◽  
Søren K. Rasmussen ◽  
Sven-Erik Jacobsen ◽  
Godfrey A. Iwo ◽  
Walter de Milliano
Keyword(s):  
Grain Yield ◽  
Analysis Of Variance ◽  
Sweet Sorghum ◽  
Block Design ◽  
Yield Stability ◽  
Biofuel Production ◽  
Environment Interaction ◽  
Yield Attributes ◽  
Fresh Biomass ◽  
Sorghum Genotypes

Forty-three sweet sorghum accessions were grown in two contrasting environments; Nigeria (tropical environment) and Denmark (temperate environment). The objectives were to determine the interaction between genotype and environment on grain yield, fresh biomass and stem sugar, and to assess yield stability of sweet sorghum and identify the best genotypes for biofuel production. The sweet sorghum originating from a Dutch and ICRISAT collection was grown in randomized complete block design in three replicates for two years (2014 and 2015). The combined analysis of variance of the sweet sorghum genotypes in two years over the two contrasting environments revealed that year (Y), genotype (G), environment (E) and genotype by environment interaction (GEI) were significant in the entire biofuel yield attributes obtained from both Dutch and ICRISAT collections except the degree of Brix and fresh biomass respectively across the year. The year and genotype interaction (Y×G) was not significant in all the biofuel attributes of Dutch accessions. Additive main effect and multiplicative interaction (AMMI) analysis of variance showed significant effect of G, E and the GEI. The AMMI was used to identify the best performing, adaptable and more stable genotypes. Twenty-two genotypes of both ICRISAT and Dutch accessions were identified to be stable across the two locations with respect to different biofuel attributes. Nine, seven, and six genotypes were found to be stable for grain yield, biomass yield and brix value, respectively. The best performing genotypes for stem sugar across locations were identified. From the available data collected, the performance of the sweet sorghum was attributed to both genetic and environmental effects. High GE was observed to influence stability, hence will influence the selection criteria of the sweet sorghum genotypes.

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

Effects of Photoinhibition Induced by Water Stress on Growth and Yield of Grain Sorghum

1988 ◽  
Vol 15 (2) ◽  
pp. 179 ◽  
Author(s):  
MM Ludlow ◽  
SB Powles
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Water Status ◽  
Grain Sorghum ◽  
Growth And Yield ◽  
Grain Number ◽  
Potential Yield ◽  
Carbon Supply ◽  
Matter Production ◽  
Absorption Of Light

The significance of photoinhibition induced by water stress for growth and grain yield of sorghum was investigated by shading water-stressed plants for a 7-day period during panicle development. Thereafter, shading was removed, stressed plants were rewatered, and all plants were kept well-watered until physiological maturity. Shading water-stressed plants for a 7-day period increased grain number and grain yield of primary heads by 10- and 13-fold, respectively. Even though plants were severely stressed, photoinhibition was only 20%. Moreover, reduction of photoinhibition by shading did not improve carbon supply to the developing panicle. Therefore, the response of grain yield to shading was attributed to a 15% higher average leaf water potential in shaded plants, which arose despite attempts to keep water status similar in shaded and unshaded plants. The effect of water stress on the primary head was so severe that many plants produced secondary heads. The grain yield from these secondary heads compensated for the low yield of primary heads so that the total dry matter production and total grain yield of water-stressed plants were similar to those of unstressed plants. In view of the ability of this relatively determinate species to compensate for potential yield losses, as well as the mechanisms to avoid water stress, high temperatures and excessive absorption of light, it seems unlikely that photoinhibition induced by water stress will be of agronomic significance in grain sorghum.

Sign in / Sign up

Export Citation Format

Share Document