PPD1 and VRN1 genes are known to be regulatory genes, influencing plant traits in addition to phasic development. We found epistatic effects of PPD1 and VRN1 genes on anthesis date, however only Vrn-B1 had an effect on crop growth. We suggest this is a pleiotropic effect of Vrn-B1 rather than a physiological association between wheat development and growth.
Crop and Pasture Science
Volume 68 Number 3 2017
CP16330Nitrogen×sulfur interaction on fertiliser-use efficiency in bread wheat genotypes from the Argentine Pampas
Wheat grain production greatly depends on the availability of soil nutrients such as nitrogen and sulfur. Fertiliser-use efficiency was evaluated in a wide range of modern genotypes differing in their cycle length and baking quality. The ranking of varieties based on sulfur-use efficiency is useful to maximise bread wheat productivity in the high yielding Humid Pampa of Argentina.
CP16367Physiological, biochemical and agronomic traits associated with drought tolerance in a synthetic-derived wheat diversity panel
A new diversity panel comprised of synthetic-derived wheats and their bread wheat donors was evaluated under well-watered and water-limited field conditions. The physiological traits like superoxide dismutase, proline and canopy temperature and agronomic traits like grain per spike and thousand-grain weight significantly explained grain yield under water-limited conditions. The study provided impetus to conduct further genetic studies to dissect the loci underpin drought tolerance in synthetic-derived diversity panel.
CP16324Microorganism profile, fermentation quality and rumen digestibility in vitro of maize-stalk silages produced at different maturity stages
The microorganism profile, fermentation quality and rumen digestibility in vitro of maize-stalk silage were investigated at different maturity stages. Results showed that all tested strains of lactic acid bacteria could efficiently ferment galactose, glucose, fructose, mannose, sucrose and trehalose. The pathogens Escherichia coli, aerobic bacteria, filamentous fungi and Saccharomycetes occurred in the silages, and the inhibition of these pathogens need to be further considered.
CP16363New resistances offer opportunity for effective management of the downy mildew (Hyaloperonospora parasitica) threat to canola
Downy mildew, caused by the pathogen Hyaloperonospora parasitica, is an ongoing and increasingly serious threat to oilseed Brassica production in Australia. Testing of 131 Brassicaceae varieties, including 109 Australian canola or mustard varieties, revealed high-level resistance to the disease. The most resistant varieties can now be deployed into regions where downy mildew is a persistent problem, providing the oilseed canola and mustard industries with their first effective option for management of this increasingly problematic disease.
CP16427In-field film antitranspirant application shows potential yield protection from flowering-stage drought periods in winter canola (Brassica napus)
Previous work has shown antitranspirant efficacy in protecting Brassica napus and other major food crops from drought damage in glasshouse conditions. Two experiments were carried out in the same field over consecutive years to evaluate the effectiveness of chemicals with antitranspirant activity applied over different growth stages and at different dose rates for sustaining canola yield under drought. The results showed yield protection when antitranspirant was applied at 1 L ha–1 just before flowering, therefore encouraging further work in different environments and spraying conditions.
CP16308Analysis of Leptosphaeria species complex causing phoma leaf spot and stem canker of winter oilseed rape (Brassica napus) in the Czech Republic
Phoma stem canker is a disease of economic importance in oilseed rape producing areas worldwide. Large-scale survey of the occurrence of two causal agents of the disease (Leptosphaeria maculans and L. biglobosa) in host tissues and the country-wide distribution of the pathogens revealed single-species infection as well as co-infection by both species, indicating Leptosphaeria spp. co-existence in the Czech Republic. Results suggest that L. biglobosa is more successful than L. maculans in colonising oilseed rape tissues in later plant growth stages.
CP17082Combined foliar selenium and zinc biofortification in field pea (Pisum sativum): accumulation and bioavailability in raw and cooked grains
To enhance Se and Zn concentrations in raw and cooked field pea (Pisum sativum L.) grains the efficacy of their combined application was tested. The combined application influenced positively grain Zn concentration, but cooking decreased slightly grain Se and Zn concentrations although enhanced Zn bioavailability. The consumption of 100 g of cooked, biofortified field peas would provide ~50% of recommended daily intake of Zn and 45% of Se.
CP16334Sugarcane yield gap: can it be determined at national level with a simple agrometeorological model?
The use of crop simulation models is a feasible way to determine yield gap for sugarcane crop. Water deficit is the main cause of sugarcane yield gap in Brazil. Strategy to improve sugarcane yield in Brazil should consider drought-tolerant cultivars, irrigation, and deep soil preparation.
CP15380Abiotic stress tolerance of kikuyu (Cenchrus clandestinus) and some related grasses and potential of kikuyu for agricultural and urban environments
Kikuyu offers nutritional advantages for grazing ruminant management and the subsequent flow on benefits in terms of food stuffs for human consumption. Equally as important is its value in urban green spaces where recreational functionality and aesthetic qualities play an important role in human health and wellbeing. This article examines the origin, genetic variability, tolerance to soil salinity, drought and the potential for genetic improvements to this economically important grass.
CP16444A modification of the arcsine–log calibration curve for analysing soil test value–relative yield relationships
This article proposes a modification of an algorithm that improves the performance of a calibration method for soil test – crop fertilizer response relationships. This approach estimates confidence intervals for critical soil-test values thresholds. Comparisons between the original and the modified methodology are included as well as a list of procedures for potentially interested users.
The peer-reviewed and edited version of record published online before inclusion in an issue
CP16383Use of sensor-determined behaviours to develop algorithms for pasture intake by individual grazing cattle
Practical and reliable measurement of individual pasture intake will improve precision in livestock and pasture management, provide input data for prediction and simulation models, and allow animals to be ranked on grazing efficiency for genetic improvement. We used sensors to determine pasture intake of individual grazing cattle. Grazing behaviour classified using data from collar-mounted sensors, and benchmark pasture-intake data, allowed establishment of initial pasture-intake algorithms for use with sensors.
Nine QTLs associated with soybean seed weight were identified through a RIL population derived from a cross between parents with large phenotypic difference across nine environments. These QTLs had additive and/or additive × environment interaction effects, which could explain 1.07–18.43% of the phenotypic variation in the different environments. Nine epistatic pairwise QTLs were identified in different environments. These QTLs and their genetic information were valuable for marker-assisted breeding.
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.
Performance of lucerne genotypes for biomass production and N content differs in monoculture and in mixture with grasses and is partly predicted from traits recorded on isolated plants
Cloning and functional analysis of a novel x-type high-molecular-weight glutenin subunit with altered cysteine residues from Aegilops umbellulata
Combined Application of NPKand5-Aminolevulinic Acid (ALA) Improved Drought Tolerance in Leymuschinensis(Trin.) Tzvel by Modulating Its Morpho-physiological Characteristics
The role of FLOWERING LOCUS C in vernalization of Brassica: The importance of vernalization research in the face of climate change
Quality and yield response to the control of Mycosphaerella graminicola in wheat affected by nitrogen rate and cultivar breadmaking characteristics
Identification of new resistance sources to powdery mildew, and the genetic characterization of resistance in three common bean genotypes
Variation in seed nutrient content, seedling growth and yield of rice varieties grown in a paddy field without application of fertilisers for forty years
Changes in allele frequencies of avirulence genes in the blackleg fungus, Leptosphaeria maculans, over two decades in Australia
Can management practices provide greenhouse gas abatement in grain farms in New South Wales, Australia?
Phosphorus acquisition by three wheat cultivars contrasting in aluminum tolerance growing in an aluminum-rich Andisol
Stem lodging parameters of the basal three internodes associated with plant population densities and developmental stages in foxtail millet cultivars differing in resistance to lodging
Changes in farming practices impact on spore release patterns of the blackleg pathogen, Leptosphaeria maculans.
Host-pathogen interactions in relation to management of light leaf spot (Pyrenopeziza brassicae) on brassicas
Enhancing composition and persistence of mixed pasture swards in southern New South Wales through alternative spatial configurations and improved legume performance
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Sensitivity of sensor-based nitrogen rates to selection of within-field calibration strips in winter wheatCrop and Pasture Science 68 (2)Stanisław M. Samborski, Dariusz Gozdowski, Olga S. Walsh, Peter Kyveryga, Michał Stłpieł
Crop and Pasture Science 68 (3)F. A. J. Harris, H. A. Eagles, J. M. Virgona, P. J. Martin, J. R. Condon, J. F. Angus
Crop and Pasture Science 68 (2)Lachlan Lake, Victor Sadras
Prospects to utilise intercrops and crop variety mixtures in mechanised, rain-fed, temperate cropping systemsCrop and Pasture Science 67 (12)Andrew L. Fletcher, John A. Kirkegaard, Mark B. Peoples, Michael J. Robertson, Jeremy Whish, Antony D. Swan
Organisms with potential to assist in the control of Helicoverpa armigera in Australian cotton production systemsCrop and Pasture Science 67 (12)Oliver G. G. Knox, Chris M. T. Anderson, Jenna L. Ross, Colin C. R. Tann, Vadakattu V. S. R. Gupta
Crop and Pasture Science 67 (12)Brian L. Machovina, Kenneth J. Feeley, Brett J. Machovina
Yield, growth, canopy traits and photosynthesis in high-yielding, synthetic hexaploid-derived wheats cultivars compared with non-synthetic wheatsCrop and Pasture Science 68 (2)Yonglu Tang, Xiaoli Wu, Chaosu Li, Wuyun Yang, Mingbo Huang, Xiaoling Ma, Shizhao Li
Referencing laser and ultrasonic height measurements of barleycultivars by using a herbometre as standardCrop and Pasture Science 67 (12)Gero Barmeier, Bodo Mistele, Urs Schmidhalter
Crop area increases drive earlier and dry sowing in Western Australia: implications for farming systemsCrop and Pasture Science 67 (12)Andrew Fletcher, Roger Lawes, Cameron Weeks
Productivity in simulated drought and post-drought recovery of eight ryegrass cultivars and a tall fescue cultivar with and without Epichloë endophyteCrop and Pasture Science 68 (2)L. He, C. Matthew, C. S. Jones, J.-H. B. Hatier
Crop and Pasture Science 67 (6)Ian J. Rochester, Michael Bange
Effects of straw management, inorganic fertiliser, and manure amendment on soil microbial properties, nutrient availability, and root growth in a drip-irrigated cotton fieldCrop and Pasture Science 67 (12)X. Z. Pu, G. J. Zhang, P. P. Zhang, Y. J. Liu, W. F. Zhang
Assessment of phenotypic diversity in pearl millet [Pennisetum glaucum (L.) R. Br.] germplasm of Indian origin and identification of trait-specific germplasmCrop and Pasture Science 67 (12)Jyoti Kumari, Manas K. Bag, S. Pandey, S. K. Jha, S. S. Chauhan, Girish K. Jha, N. K. Gautam, M. Dutta
Expression and heritability of late flowering and other quantitative traits in cultivated×Australian wild mungbean hybridsCrop and Pasture Science 67 (12)Thuan D. Nguyen, Hang T. T. Vu, L. M. Bielig, R. J. Lawn
Heritability of target bioactive compounds and hydrophilic antioxidant capacity in purple- and red-fleshed tetraploid potatoesCrop and Pasture Science 67 (12)R. Tierno, J. I. Ruiz de Galarreta
Field-based screening identifies resistance to Sunn pest (Eurygaster integriceps) feeding at vegetative stage in elite wheat genotypesCrop and Pasture Science 68 (2)Livinus Emebiri, Mustapha El Bousshini, Mui-Keng Tan, Francis C. Ogbonnaya
Physiological, biochemical and agronomic traits associated with drought tolerance in a synthetic-derived wheat diversity panelCrop and Pasture Science 68 (3)Fakiha Afzal, Bharath Reddy, Alvina Gul, Maria Khalid, Abid Subhani, Kanwal Shazadi, Umar Masood Quraishi, Amir M. H. Ibrahim, Awais Rasheed
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
Interactions between water and nitrogen in Australian cropping systems: physiological, agronomic, economic, breeding and modelling perspectivesCrop and Pasture Science 67 (10)V. O. Sadras, P. T. Hayman, D. Rodriguez, M. Monjardino, M. Bielich, M. Unkovich, B. Mudge, E. Wang
New ley legumes increase nitrogen fixation and availability and grain crop yields in subtropical cropping systemsCrop and Pasture Science 68 (1)Lindsay W. Bell, John Lawrence, Brian Johnson, Mark B. Peoples