scholarly journals Effects of genotypes and sowing time on phenology and yield performance traits of tef [Eragrostis tef (Zucc.) Trotter] in low moisture stress environments

2020 ◽  
Vol 16 (12) ◽  
pp. 1710-1720
Author(s):  
Demissie Mengistu ◽  
Assefa Kebebew ◽  
Hirpa Dechassa
Keyword(s):  
Moisture Stress ◽  
Eragrostis Tef ◽  
Sowing Time ◽  
Yield Performance ◽  
Performance Traits ◽  
Stress Environments

scholarly journals Mapping QTL for Grain Yield under Moisture Stress Environments in Rice (Oryza sativa L.)

2011 ◽  
Vol 3 (4) ◽  
pp. 129-133
Author(s):  
Supriyo CHAKRABORTY ◽  
Sheng-Chu WANG ◽  
Zhao-Bang ZENG
Keyword(s):  
Grain Yield ◽  
Genetic Variance ◽  
Oryza Sativa L ◽  
Moisture Stress ◽  
Interval Mapping ◽  
Chromosome 1 ◽  
Phenotypic Variance ◽  
Common Qtl ◽  
Rice Chromosomes ◽  
Stress Environments

Polygenes (QTLs) for grain yield were mapped on rice chromosomes under two moisture stress environments by multiple interval mapping (MIM) method in a double haploid (DH) population derived from a cross between a deep-rooted japonica and a shallow-rooted indica genotype. In environment 1 (E1), the MIM detected a total of six QTLs for grain yield on chromosomes-two QTLs on chromosome 1 and four QTLs on chromosome 5 along with one additive x additive epistasis. But in environment 2 (E2), the MIM detected five QTLs for grain yield on two chromosomes-three QTLs on chromosome 1 and two QTLs on chromosome 7. One common QTL on chromosome 1 flanked by the markers RG109-ME1014 was detected in both the environments, although the other detected QTLs differed between environments. The magnitude of QTL effect, percent genetic variance and percent phenotypic variance explained by each QTL was also estimated in both environments. The common QTL explained about 26.05 and 13.93% of genetic variance in E1 and E2, respectively. Estimated broad sense heritability for grain yield was 48.01 in E1 and 25.27% in E2.

scholarly journals Sensitivity of Seed Germination to Salt Stress in Teff [Eragrostis tef (Zucc.) Trotter]

2019 ◽  
Vol 76 (1) ◽  
pp. 91
Author(s):  
Panayiota PAPASTYLIANOU ◽  
Ilias TRAVLOS ◽  
Ioannis ROUSSIS ◽  
Dimitrios BILALIS
Keyword(s):  
Salt Stress ◽  
Agricultural Development ◽  
Animal Feed ◽  
Moisture Stress ◽  
Germination Percentage ◽  
Limiting Factors ◽  
Eragrostis Tef ◽  
Germination Time ◽  
Randomized Design ◽  
Mean Germination Time

Teff is an annual grass originated in Ethiopia, grown for both human food and animal feed. Salinity and moisture stress are the main limiting factors of agricultural development on arid and semi-arid regions. The aim of this study was to investigate the effect of salinity due to NaCl on germination of teff. A set of experiments was conducted under a completely randomized design with four replications of 200 seeds at two different suboptimal germination temperatures (15 and 25 °C) in the dark for 10 days. In order to create salt stress conditions during the germination process, seven solutions were used (0 as control, 80, 160, 240 and 320, 400 and 480 mM NaCl). The germination performance was evaluated by final germination percentage and mean germination time. The presence of NaCl reduced germination, especially above 240 mM for 15 °C and 400 mM for 25 °C. The mean germination time increased with higher NaCl levels.

scholarly journals Combining Ability for Grain Yield Performance among CIMMYT Germplasm Adapted to the Mid-Altitude Conditions

2018 ◽  
Vol 10 (3) ◽  
pp. 253
Author(s):  
Casper Nyaradzai Kamutando ◽  
Cosmos Magorokosho ◽  
Shorai Dari
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Additive Genetic Variance ◽  
Inbred Lines ◽  
Nitrogen Stress ◽  
Environment Interaction ◽  
Yield Performance ◽  
Low Nitrogen Stress ◽  
Stress Environments ◽  
Low Nitrogen

The International Centre for Maize and Wheat Improvement (CIMMYT) develops maize (Zea mays L.) inbred lines and hybrids yearly that have several breeding and commercial attributes. However, no genetic analysis has been done on the recently developed inbred lines for yield performance under drought and low-N stress. The objectives of this study were to identify lines with positive general combining ability (GCA) effects for grain yield under stress environments and to identify the best single-cross hybrids with the highest specific combining ability (SCA) effects. Analysis of variance combined across sites showed significant mean squares for genotypes, locations and genotype by environment interaction (GEI) for grain yield. GCAlines, SCA and components of interaction effects were significant across sites. Additive genetic variance was more important than dominance variance in determining yield performance across locations indicating that selection based on grain yield under drought and low-N stress can be effective. Average grain yield across the eight locations ranged from 1.61 t ha-1 to 10.63 t ha-1 while narrow sense heritability for grain yield was 52.6% across sites and was slightly lower under managed drought and low-N stress. The testers CL115807 and CL106622 showed positive and significant GCA effects for yield performance under drought and low-N stress respectively. The best tester across all sites was CL115793 and line CZL0713 had consistently positive GCA effects for grain yield across sites. CML536 × CL115802 and CML312 × CL106508 were the best single crosses under low nitrogen stress sites while hybrid CML312 × C323-45 showed the highest positive SCA effects across sites. In conclusion, our results show that CIMMYT has new lines that have desirable adaptive attributes when grown under drought and low nitrogen stress environments in the mid-altitude region; hence these can be adopted for hybrid, synthetic and OPV formation.

Performance and Water-Use Efficiency of Wild Cytoplasmic Sources in Sunflower

Helia ◽  
2018 ◽  
Vol 41 (68) ◽  
pp. 129-140 ◽  
Author(s):  
Vikrant Tyagi ◽  
S. K. Dhillon
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Biotic And Abiotic Stress ◽  
Main Interest ◽  
Yield Performance ◽  
Wide Range ◽  
Stable Performance ◽  
Use Efficiency ◽  
Stress Environments ◽  
Parental Lines

AbstractWild Helianthus species should have be a main interest sunflower breeding for the introgressing elite genes for biotic and abiotic stress. The future use of wild sunflower in development of drought resistance cytoplasmic sources should be expanded to the wide range of wild species as compared to conventional sources. The objective of this study was to evaluate different parental lines for their water-use efficiency and seed yield performance under two environments for two years. ARG-2A received from H. argophyllus, 234A and 38A from H. petiolaris were found to be the most susceptible genotypes, whereas, 42A, 42B from H. petiolaris and ARG-6A (H. argophyllus) were found to be tolerant to drought stress. CMS-XA, RCR-8297, E002-91A, NC-41B and P124R were observed to be well adapted to stress environments. ARG-3A from H. argophyllus had a stable performance over the environments, which may be useful to develop water use efficient hybrids having diversified cytoplasmic backgrounds in sunflower breeding.

scholarly journals Analysis of rainfall characteristics and moisture availability index for crop planning in semi arid region of north Gujarat

2021 ◽  
Vol 23 (4) ◽  
pp. 409-415
Author(s):  
JAYDIP J. MAKWANA ◽  
B. S. DEORA ◽  
C. K. PATEL ◽  
B. S. PARMAR ◽  
A. K. SAINI
Keyword(s):  
Meteorological Data ◽  
Irrigation Management ◽  
Moisture Stress ◽  
Distribution Functions ◽  
Agricultural Crop ◽  
Sowing Time ◽  
Crop Planning ◽  
Semi Arid Region ◽  
North Gujarat ◽  
Semi Arid

The rainfall, one of the most important natural input resource for dryland agricultural production system, is erratic and temporal in nature. An attempt has been made to analyze thirty years (1990-2019) of meteorological data for prediction of probable week of onset and withdrawal of monsoon and to end with crop planning in North Gujarat region (India).The highest and lowest amount of weekly rainfall was observed in 27th and 39th SMW, respectively. The probability distribution functions viz. generalized extreme value, Gumbel maximum, Gamma and Weibull were found best-fit for prediction of weekly rainfall. The analysis revealed 26th SMW (25 Jun – 01 Jul) and onwards as the most suited sowing time of kharif crops. There are also chances of occurrence of moisture stress during 34th and 35th SMW. The results would be useful for agricultural scientists, researchers, decision makers and policy planners in the field of agricultural crop planning and irrigation management for semi arid regions. 

scholarly journals The MET Analysis of Yield Performance of Advanced Sorghum [<i>Sorghum Bicolor</i> (L.) Moench] Lines under Moisture Stress Areas Using Spatial Analysis

2020 ◽  
Vol 11 (10) ◽  
pp. 1618-1631
Author(s):  
Kidanemaryam Wagaw ◽  
Amare Seyoum ◽  
Taye Tadesse ◽  
Adane Gebreyohannes ◽  
Amare Nega ◽  
...  
Keyword(s):  
Spatial Analysis ◽  
Sorghum Bicolor ◽  
Moisture Stress ◽  
Yield Performance

scholarly journals Tef (Eragrostis tef) variety development for moisture stress areas of Ethiopia

2020 ◽  
Vol 7 (4) ◽  
pp. 1
Author(s):  
Worku Kebede ◽  
Yazachew Genet ◽  
Tsion Fikre ◽  
Kidist Tolosa ◽  
Solomon Chanyalew ◽  
...  
Keyword(s):  
Moisture Stress ◽  
Eragrostis Tef

scholarly journals Grain Yield Performance and Parametric Stability Statistics of Tef {Eragrostis tef (Zucc) Trotter} Genotypes in Tigray, Ethiopia

2020 ◽  
Vol 2 (1) ◽  
pp. p70
Author(s):  
Chekole Nigus ◽  
Yanos G Mariam ◽  
Hailegbreal Kinfe ◽  
Brhanu Melese ◽  
Ataklty Mekonen
Keyword(s):  
Grain Yield ◽  
Static Stability ◽  
Eragrostis Tef ◽  
Gge Biplot ◽  
Parametric Stability ◽  
Yield Performance ◽  
Effective Selection ◽  
The Mean ◽  
The Stability ◽  
Stability Statistics

The most constraints of tef productions are lodging, drought, low yield cultivars; insect and disease affected the growth of tef. These, factors causes inconsistence performance yield due to GEI. The objective was to evaluate tef genotypes on their yield performance, stability and parametric stability to select most independent and informative statistics method. The experiment was conducted at four locations for two seasons; with design of RCBD three replications, two standard checks and 19 tef genotypes. Data was collected on grain yield and analyzed by R software and STABILITYSOFT. The analysis of variance for the combined mean of grain yield showed that there was significance difference (P<0.001) between genotypes, environments and GEI. Yield performance was influenced by Environments and GEI. The mean grain yield of genotypes over GEI varies from 820.94kg/ha to 2438.90kg/ha, while the genotype grain yield was ranged from 1382 to 1989kg/ha. G19, G17 and G6 were identified the higher grain yield performance over seven environments. Whereas, G8 and G11 were the lowest yielding tef genotypes. Nine parametric methods and GGE biplot were used to evaluate the stability of the genotypes. G19 was the most stable following G17 and would be grown for unfavorable growing environments. However, G6 was stable for favorable environmental condition. G19 and G17 had static stability and fitting for area faced with erratic rain fall. Even though, parametric stability did not show a positive and statistically significant correlation with mean yield the Mean variance component (θi) is selected with GGE biplot for evaluation of tef genotypes in the development of cultivar. Effective selection of variety would be best if mega-environment, representative and discriminating testing areas are identified.

scholarly journals Assessment of production potential of long-linted Gossypium arboreum L. genotypes under different sowing times

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
K. Sankaranarayanan ◽  
M. V. Venugopalan ◽  
D. Kanjana
Keyword(s):  
Quality Index ◽  
Insect Pests ◽  
Moisture Stress ◽  
Fibre Strength ◽  
Fibre Quality ◽  
Gossypium Arboreum ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Sowing Time ◽  
Seed Cotton Yield

Abstract Background Gossypium arboreum is one of the cultivated diploids which has inherent resistance against insect pests and diseases, can withstand moisture stress, needs less nutrients and is suitable for erratic, less rainfall and marginal soils. Due to its smaller boll size and poor locule retentivity, adoption of species by farmers is very low. So, best long-linted G. arboreum genotypes with high yielding potential and suitable sowing time will be identified for rainfed tracts of cotton cultivated areas in India. Results The pooled analysis results found that the significantly highest mean seed cotton yield was recorded with Phule Dhanwanthry (1069 kg/ha) which was on par with K12 (1027 kg/ha), DLSA 17 (977 kg/ha) and PA 812 (951 kg/ha). Planting at 4 August yielded the significantly higher seed cotton yield (1345 kg/ha) in comparison with 4 September sowing (536 kg/ha). The interaction results in pooled data revealed that Genotype PA 812 planted at 4 August registered the significantly highest seed cotton yield (1487 kg/ha) which was on par with all genotypes sown on 4 August except PA 402. Amongst long-linted genotypes, PA 760 recorded the significantly highest upper half length (29.9 mm), mean length (24.9 mm) and fibre strength (27.0 g/tex) and fibre quality index (349.7); which was on par with DLSA 17, PA 812 and PA 402. The quality characters had not been influenced significantly by different times of sowing. Conclusions The results concluded that the significantly highest mean seed cotton yield was recorded with Phule Dhanwanthry (1069 kg/ha) which was on par with K12 (1027 kg/ha), DLSA 17 (977 kg/ha) and PA 812 (951 kg/ha). Planting at 4 August found that the significantly higher seed cotton yield (1345 kg/ha) in comparison with 4 September sowing (536 kg/ha). Amongst long-linted genotypes, PA 760 recorded the significantly higher fibre quality index (349.7)

Sign in / Sign up

Export Citation Format

Share Document