This review describes the impact of drought on yield, trends in yield for boosting crop yields to meet the projected demands of rising global population by 2050, and genetic gain achieved by plant breeding in the last decades in wheat. In addition, it discusses recently developed techniques (i.e. genomic selection and high-throughput phenotyping) integrated with current approaches for improving drought in wheat.
Crop and Pasture Science
Volume 69 Number 3 2018
CP17310Assessing the role of genetics for improving the yield of Australia’s major grain crops on acid soils
Acid soils remain an important constraint to crop production in Australia and globally. It is likely that crop yields on acid soils can be increased with further breeding and biotechnology. This review summarises the known variation in acid-soil tolerance in Australia’s most important grain crops and assesses the potential for genetics and biotechnology to increase yields.
CP17224Modern hexaploid wheat differs from diploid and tetraploid ancestors in the importance of stress tolerance versus stress avoidance
Wheat genotypes possess two strategies of avoidance and tolerance to adapt to high temperature and weak radiation stress; diploid and tetraploid wheats acquired avoidance mechanism to adapt to abiotic stress; modern hexaploid wheat varieties displayed a stronger tolerance to the stress environment; tolerance and avoidance strategies respectively accounted for 60% and 22% of the variations in grain yield.
CP17329Mapping quantitative trait loci for cold tolerance at the booting stage in rice by using chromosome segment substitution lines
Low temperature induced spikelet sterility at the booting stage was investigated in a CSSL population under natural conditions. Eight major QTLs for cold tolerance were identified. Five QTLs might be new.
The ability to improve heat tolerance within Brassica napus is needed to enable genetic gain in a warming climate. This research demonstrates the existence of genetic variation to heat stress within B. napus. This discovery will facilitate the improvement of heat tolerance within B. napus and ensure the sustainable growth of this important oilseed going forward.
CP17357Combining ability and heterosis analysis for mineral elements by using cytoplasmic male-sterile systems in non-heading Chinese cabbage (Brassica rapa)
Heterosis analysis was performed to exploit the crossing combinations with desirable positive effects of heterosis in terms of mineral element content. The superior parental lines and hybrid combinations for the improvement of mineral elements were found by analysis of combining ability in non-heading Chinese cabbage. Two isonucleus-alloplasmic lines of non-heading Chinese cabbage was verified with positive cytoplasmic effects in mineral elements including calcium and iron.
CP17439Crop yield responses to surface and subsoil applications of poultry litter and inorganic fertiliser in south-eastern Australia
Subsoil manuring potentially has both amelioration and fertilisation effects. To separate these effects, eight field experiments were carried out testing surface and deep placement of poultry litter and inorganic fertiliser with matched nutrition. Differences in crop yield were attributed to nutrients (particularly nitrogen) supplied by the amendment, and not to the amelioration of subsoil constraints.
CP17044Stomatal and photochemical limitations of photosynthesis in coffee (Coffea spp.) plants subjected to elevated temperatures
Elevated temperatures cause decreases in photosynthetic rates in C. arabica. Photochemical apparatus of coffee plants show great heat tolerance. Stomatal closure imposes the major limitation on C. arabica photosynthesis under elevated temperature.
CP17308Seed germination response of a noxious agricultural weed Echium plantagineum to temperature, light, pH, drought stress, salinity, heat and smoke
Echium plantagineum is a serious pasture weed in Australia. We conducted a study to understand the effects of range of environmental factors on this invasive species seeds. Temperature was influential on germination than light and the species is tolerant of a wide range of pH. Moisture may limit germination, as may elevated salinity. Management of this weed requires approaches that minimise soil seedbank input or prevent germination of soil seedbanks.
These articles have been peer reviewed and accepted for publication. They are still in production and have not been edited, so may differ from the final published form.
Potassium starvation affects biomass partitioning and sink-source responses in three sweet potato genotypes with contrasting potassium-use efficiencies
Analysis of phenotype characterization and expression pattern of genes related mainly to carbohydrate metabolism and sporopollenin in male-sterile anthers induced by high temperature in wheat (Triticum aestivum L.)
Intensive annual crop production and root development in a tropical acid soil under long-term no-till and soil amendments management
Indigenous PGPR’s and Chemical Fertilizers: Impact on Wheat (Triticum aestivum L.) Productivity and Soil Properties in North Western Himalayan Region
Effects of calcium carbonate application on field-grown tomato physiology, yield and quality in a semi-arid Mediterranean climate
Physiological responses of drought tolerance in orchardgrass in association with persistence and summer dormancy
Chloroplast structure and DNA methylation polymorphisms in an albino mutant of Xinong 1376 wheat (Triticum aestivum L.) cultivar
Spatio-temporal characterization of changes in the resistance of widely grown soybean cultivars to Soybean mosaic virus across a century of breeding in China
Indirect selection for potential yield in early generation, spaced plantings of wheat and other small grain cereals: a review.
Calorimetry, chemical composition and in vitro digestibility of sugarcane treated with calcium hydroxide
Evaluation of lentil varieties and farming system effect on seed damage and yield loss due to bruchid infestation
Changes in DNA methylation are associated with heterogeneous cytoplasm suppression of the multi-ovary gene in wheat (Triticum aestivum L.)
Changes in seed composition and germination of wheat and pea when exposed to high temperatures during grain filling and maturation
The effect of tree density on competition between Leucaena leucocephala and Chloris gayana using a Nelder wheel trial: I. Above-ground interactions
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Crop and Pasture Science 69 (1)Xuehua Zhang, W. G. Dilantha Fernando
Host–pathogen interactions in relation to management of light leaf spot disease (caused by Pyrenopeziza brassicae) on Brassica speciesCrop and Pasture Science 69 (1)Chinthani S. Karandeni Dewage, Coretta A. Klöppel, Henrik U. Stotz, Bruce D. L. Fitt
Crop and Pasture Science 69 (3)C. B. Koscielny, J. Hazebroek, R. W. Duncan
Crop and Pasture Science 69 (3)Reza Mohammadi
Winter cover crops as green manure in a temperate region: the effect on nitrogen budget and yield of silage maizeCrop and Pasture Science 68 (11)B. Ćupina, S. Vujić, Dj. Krstić, Z. Radanović, R. Čabilovski, M. Manojlović, D. Latković
Elevated field atmospheric CO2 concentrations affect the characteristics of winter wheat (cv. Bologna) grainsCrop and Pasture Science 68 (8)Francesca Verrillo, Franz-Werner Badeck, Valeria Terzi, Fulvia Rizza, Letizia Bernardo, Antimo Di Maro, Clara Fares, Alessandro Zaldei, Francesco Miglietta, Anna Moschella, Marcella Bracale, Candida Vannini
In-field methods for rapid detection of frost damage in Australian dryland wheat during the reproductive and grain-filling phaseCrop and Pasture Science 68 (6)Eileen M. Perry, James G. Nuttall, Ashley J. Wallace, Glenn J. Fitzgerald
Abiotic stress tolerance of kikuyu (Cenchrus clandestinus) and some related grasses and potential of kikuyu for agricultural and urban environmentsCrop and Pasture Science 68 (3)Duncan Fraser, Peter Sharp, Nabil Ahmad, Brett Morris, Richard Trethowan
Assessing the role of genetics for improving the yield of Australia’s major grain crops on acid soilsCrop and Pasture Science 69 (3)Peter R. Ryan
Crop yield responses to surface and subsoil applications of poultry litter and inorganic fertiliser in south-eastern AustraliaCrop and Pasture Science 69 (3)Corinne Celestina, Jon Midwood, Stuart Sherriff, Sam Trengove, James Hunt, Caixian Tang, Peter Sale, Ashley Franks
Intrinsic capacity for nutrient foraging predicts critical external phosphorus requirement of 12 pasture legumesCrop and Pasture Science 69 (2)Graeme A. Sandral, Rebecca E. Haling, Megan H. Ryan, Andrew Price, Wayne M. Pitt, Shane M. Hildebrand, Christopher G. Fuller, Daniel R. Kidd, Adam Stefanksi, Hans Lambers, Richard J. Simpson
Crop and Pasture Science 68 (12)T. L. Nordblom, T. R. Hutchings, R. C. Hayes, G. D. Li, J. D. Finlayson
A cytological and molecular analysis of D-genome chromosome retention following F2–F6 generations of hexaploid×tetraploid wheat crossesCrop and Pasture Science 69 (2)Sriram Padmanaban, Peng Zhang, Mark W. Sutherland, Noel L. Knight, Anke Martin
No longer a west-side story – pesticide resistance discovered in the eastern range of a major Australian crop pest, Halotydeus destructor (Acari: Penthaleidae)Crop and Pasture Science 69 (2)James L. Maino, Matthew Binns, Paul Umina
Molecular and phenotypic diversity among chickpea (Cicer arietinum) genotypes as a function of drought toleranceCrop and Pasture Science 69 (2)Supriya Sachdeva, C. Bharadwaj, Vinay Sharma, B. S. Patil, K. R. Soren, Manish Roorkiwal, Rajeev Varshney, K. V. Bhat
Crop and Pasture Science 69 (1)Salman Alamery, Soodeh Tirnaz, Philipp Bayer, Reece Tollenaere, Boulos Chaloub, David Edwards, Jacqueline Batley
Mapping quantitative trait loci for cold tolerance at the booting stage in rice by using chromosome segment substitution linesCrop and Pasture Science 69 (3)Jianguo Lei, Shan Zhu, Caihong Shao, Shusheng Tang, Renliang Huang, Changlan Zhu, Song Yan
Changes in farming practices impact on spore release patterns of the blackleg pathogen, Leptosphaeria maculansCrop and Pasture Science 69 (1)J. McCredden, R. B. Cowley, S. J. Marcroft, A. P. Van de Wouw
Seed germination response of a noxious agricultural weed Echium plantagineum to temperature, light, pH, drought stress, salinity, heat and smokeCrop and Pasture Science 69 (3)Singarayer Florentine, Sandra Weller, Alannah King, Arunthathy Florentine, Kim Dowling, Martin Westbrooke, Bhagirath S. Chauhan
Introgression of allelic diversity from genetically distinct variants of Brassica rapa into Brassica napus canola and inheritance of the B. rapa allelesCrop and Pasture Science 69 (1)Rohit Attri, Habibur Rahman