Yield improvement and associated characteristics of some Australian spring wheat cultivars introduced between 1860 and 1982

Perry, M. W.; D’Antuono, M.

doi:10.1071/ar9890457

Cited by 113 publications

(121 citation statements)

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“…The results are in accordance with various studies which have revealed the positive impact of increased number of spikes per area on yield [18][19][20][21] and the number of grains per spike [18,22,23]. On the contrary, our results did not confirm studies claiming that higher yields are combined with increased 1000 kernel weight [5,24].…”

Section: Discussioncontrasting

confidence: 45%

Multienvironmental evaluation of wheat landraces by GGE Biplot Analysis for organic breeding

Koutis¹,

Mavromatis²,

Baxevanos³

et al. 2012

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This study was conducted to determine the performance of wheat landraces cultivated under organic conditions and to analyze their stability across diverse environments. Six wheat landraces with specific characteristics (high protein content, drought tolerance, stay green) were tested under organic growing environment. The experiments were applied in three locations (Larisa (LAR), Thessaloniki (THES), Kilkis (KIL)) for three growing seasons. The role of specific agronomic traits (stay green, lodging) and their correlation with yield components were analyzed. Stability and genotypic superiority for grain yield were determined using ANOVA and genotype × environment (GGE) biplot analysis. Furthermore, the interrelationships among wheat traits and genotype-by-trait using regression analysis, coefficient of variation and (GT)-biplot technique were studied. Significant differences were found in yield among wheat landraces tested, and also in yield components, as related to specific traits expressed into organic environment. Best varieties in terms of yield were Skliropetra and M. Argolidas, characterized by lowest weight of 1000 grains, large number of spikes per m 2 meter and the highest number of grains per spike as compared to the other landraces. The statistical model GGE biplot provides useful information for experimentation of wheat landraces when grown under organic environment. It identifies clearly the ideal and representative environment for experimentation and underlines the effect of specific traits for each wheat cultivar on yield performance and stability across environments.

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Section: Discussioncontrasting

confidence: 45%

Multienvironmental evaluation of wheat landraces by GGE Biplot Analysis for organic breeding

Koutis¹,

Mavromatis²,

Baxevanos³

et al. 2012

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“…This indicated that past kabuli chickpea breeding efforts in Ethiopia have resulted in an average grain yield increment of 445.67 kg ha -1 when the local check variety, DZ-10-4, was used as a reference (Table 3). Similarly, previous work on durum wheat (Waddington et al, 1987), Australian spring wheat (Perry & D'Antuono, 1989), soybean (Voldeng et al, 1997), and tef (Teklu, 1998) reported an increase in yield potential of the tested varieties over years of variety release.…”

Section: Resultsmentioning

confidence: 99%

Breeding Progress for Grain Yield and Yield Related Characters of Kabuli Chickpea (Cicer arietinum L.) in Ethiopia Using Regression Analysis

Tadesse¹,

Funga²,

Fikre³

et al. 2018

JAS

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The genetic progress in seed yield and yield related characters of 10 kabuli chickpea varieties released by the Ethiopian Chickpea Crop Improvement Program from 1974 to 2017 was assessed during the main cropping season. The varieties were evaluated in the Randomized Complete Block design at Debrezeit Agricultural Research Center experimental research farm. The overall increase in seed yield over the local check, DZ-10-4, was estimated to be 739 kg/ha (38.9%). On station grain yield increased from 1900 to 3250 kg/ha during the last 43 years and the overall increase in seed yield of the Arerti variety over the oldest variety DZ-10-4 was estimated to be 1350 kg/ha or 71.1%. Based on the regression analysis, the estimated average annual rate of increase in grain yield potential was 10.87kg/ha/year with an annual relative genetic change of 0.57%/year. Genotypic change was an important source for increased grain yield potential during the studied period. Positive genetic gains were observed for the yield traits (grain yield and yield components). The average cumulative gains over 43 years of breeding was, therefore, 445.67 kg (23.37%) for seed yield, and 30.26 g for hundred seeds weight (297.7%). Hundred seed weight revealed the most dramatic response to breeding for the last 43 years. It is, therefore, strategically advisable that breeding efforts in the future should give due attention to yield related traits of kabuli chickpea varieties.

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“…This could represent from 10 to about 70 kg ha −1 year −1 or even more, depending on the average yield in various parts of the world and assuming that the rate applies across regions. An earlier study (Perry and D'Antuono 1989) . The rate of genetic yield increase is likely to have been influenced by both spatial and temporal factors such as agro-ecological zone and season in all of these studies.…”

Section: Relative Contributions-management and Breedingmentioning

confidence: 99%

Addressing the yield gap in rainfed crops: a review

Anderson

Johansen

Siddique

2016

Agron. Sustain. Dev.

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The problems and challenges of rapidly increasing world population, global climate change, shortages of water suitable for irrigation and degradation of agricultural land are increasing the demand to improve grain production from rainfed arable lands. Specific challenges include estimating the size and thus the value of the yield gap, identifying the factors limiting current average production and designing profitable remedial strategies for a range of agro-ecological regions. This review of the rainfall-limited potential yields and the gap between actual or average yields of cereal and legume crops and the rainfall-limited potential indicates that there is still substantial room to increase the average yield of crops in rainfed systems in both developed and developing regions. The review has indicated that (1) the size of the gap between average and potential yields varies according to the agro-ecological zone and the available technologies from about 0.5 to over 5 t/ha, leaving considerable scope for future yield improvement; (2) there is relatively less information applicable at the farm or field scale that assesses the spatial and temporal variability of the yield gap, the reasons for the gap and the possible methods to close the gap; (3) there is also limited information on the feasibility and profitability of applying various approaches to close the gap, including tactical and strategic management practices and plant breeding; (4) the evidence of the impact of the components of conservation agriculture on crop yields in a wide range of agro-ecological regions supports the adoption of zero tillage and crop rotation but is less clear in support of residue retention; (5) objective identification and testing of factors that limit production can lead to a rational sequence of amelioration that is specific to each agro-ecological or field situation and can close the yield gap in winter-dominant rainfall environments; and (6) farmerparticipatory varietal selection, including breeding for specific adaptation can make a substantial contribution to closing the gap in a range of environments. A common observation from the reports reviewed here is that sustainable yield improvement will need to employ a range of methods that are appropriate to specific agro-ecological conditions-previous approaches based on single inputs, practices or genotypes can only be partial solutions.

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Yield improvement and associated characteristics of some Australian spring wheat cultivars introduced between 1860 and 1982

Cited by 113 publications

References 0 publications

Multienvironmental evaluation of wheat landraces by GGE Biplot Analysis for organic breeding

Multienvironmental evaluation of wheat landraces by GGE Biplot Analysis for organic breeding

Breeding Progress for Grain Yield and Yield Related Characters of Kabuli Chickpea (Cicer arietinum L.) in Ethiopia Using Regression Analysis

Addressing the yield gap in rainfed crops: a review

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