Crop and Pasture Science Crop and Pasture Science Society
Plant sciences, sustainable farming systems and food quality

Crop and Pasture Science

Crop and Pasture Science

Crop and Pasture Science is a highly cited and prestigious journal publishing original research on advances in plant sciences, sustainable farming systems, and food quality. Read more about the journalMore

Editors-in-Chief: Sergio Atienza and Zed Rengel

Current Issue

Crop and Pasture Science

Volume 69 Number 2 2018

This study reports on the differences in D chromosome retention observed in different bread wheat × durum wheat crosses. D chromosomes were still eliminated at the F5 generation suggesting that D chromosomes can be unstable for many generations in some of these crosses.

CP17204Bacterial artificial chromosome clones randomly selected for sequencing reveal genomic differences between soybean cultivars

Tingting He, Longshu Yang, Xianlong Ding, Linfeng Chen, Yanwei Li, Tanliu Wang, Hao Zhang, Junyi Gai and Shouping Yang
pp. 131-141

There are genomic differences between soybean varieties. Our research demonstrated the differences between a partial sequence of N23601 and the corresponding sequence of the reference genome from the perspective of genome structure, repeats and genes. Sequence information of the 10 BAC clones was a supplemental resource for the reference genome and can deepen our understanding of the N23601 genome.

CP17284Molecular and phenotypic diversity among chickpea (Cicer arietinum) genotypes as a function of drought tolerance

Supriya Sachdeva, C. Bharadwaj, Vinay Sharma, B. S. Patil, K. R. Soren, Manish Roorkiwal, Rajeev Varshney and K. V. Bhat
pp. 142-153

Molecular and morphological based diversity analysis could clearly discern the drought tolerant and drought sensitive genotypes into distinct groups that would be valuable in planning a breeding programme for development of moisture stress tolerant cultivars.

CP17293Assessment of crop-management strategies to improve soybean resilience to climate change in Southern Brazil

Rafael Battisti, Paulo C. Sentelhas, Phillip S. Parker, Claas Nendel, Gil M. De S. Câmara, José R. B. Farias and Claudir J. Basso
pp. 154-162

Crop models ensemble was used to evaluate if crop-management can contribute for increasing the resilience of soybean yield for future climate scenarios in southern Brazil. The crop-management strategies evaluated were irrigation, sowing date, cultivar maturity group and planting density. The best crop management strategies were the same for current and future climate, which means that changes in crop management are not expected to increase soybean resilience to climate change.

CP17020Sensitivity and uncertainty analysis of the HYDRUS-1D model for root water uptake in saline soils

Wenzhi Zeng, Guoqing Lei, Yuanyuan Zha, Yuanhao Fang, Jingwei Wu and Jiesheng Huang
pp. 163-173

A variance-based global sensitivity analysis (EFAST) was applied to the Feddes module of the HYDRUS-1D model. The effects of soil salinity, climate conditions, and crop root growth on parameter sensitivity were also explored. Based on our study, wilting point and salt stress parameters are necessary to be calibrated based on local measurements while other Feddes parameters might be determined from literature review if the data are extremely limited.

CP17276Intrinsic capacity for nutrient foraging predicts critical external phosphorus requirement of 12 pasture legumes

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 and Richard J. Simpson
pp. 174-182

Differences in the rate of phosphorus (P) application required for maximum growth (i.e. critical P requirement) were identified among temperate pasture legumes. Species able to explore P-enriched soil layers as a result of high root-length density, high specific root length and/or long root hairs had lower critical P requirements.

CP17081Tropical forage legumes provide large nitrogen benefits to maize except when fodder is removed

Skye Traill, Lindsay W. Bell, Neal P. Dalgliesh, Ainsleigh Wilson, Lina-May Ramony and Chris Guppy
pp. 183-193

A range of tropical forage legumes were grown under irrigated conditions to determine (i) the potential N inputs provided to a subsequent cereal crop and (ii) the residual N benefits once fodder was removed. The tropical forage legumes contributed large amounts of N to subsequent crops but when these legumes were cut and removed, the benefits were greatly diminished and the legumes provided little residual N benefit to a subsequent crop.

CP17121Relation between level of autumn dormancy and salt tolerance in lucerne (Medicago sativa)

Kunyong Huang, Xiaoxia Dai, Yiquan Xu, Shibing Dang, Tianran Shi, Jianmin Sun and Kehua Wang
pp. 194-204

Our results indicated that there were salt tolerance variations among alfalfa cultivars of different autumn (fall) dormancy and more severe salt stress inhibited Lucerne (alfalfa) seed germination and seedling growth. Non-fall dormant alfalfa cultivars were generally more salt tolerant than fall dormant cultivars. Further study on the detailed mechanism will be needed.

Both Si sources reduced the deleterious impact of soil acidity on ryegrass, mainly when Na-silicate was applied. Silicon increased phenols, antioxidant enzyme activities and lignin in ryegrass. Peroxidase activation seems to be linked with increased lignin in Si-treated plants.

The redlegged earth mite (RLEM) is an important agricultural pest across Australia for which few control options exist. Control options are now even fewer for some regions in SA with our study reporting the first case of pesticide resistant RLEM in SA, after remaining confined to WA for a decade. More generally, new pesticide resistance issues are outpacing the discovery of new control options.

Online Early

The peer-reviewed and edited version of record published online before inclusion in an issue

Published online 22 February 2018

CP17329Mapping quantitative trait loci for cold tolerance at the booting stage in rice by using chromosome segment substitution lines

Jianguo Lei, Shan Zhu, Caihong Shao, Shusheng Tang, Renliang Huang, Changlan Zhu and Song Yan

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.

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.

Published online 22 February 2018

CP17310Assessing the role of genetics for improving the yield of Australia

Peter R. Ryan

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.

Published online 19 February 2018

CP17308Seed germination response of a noxious agricultural weed Echium plantagineum to temperature, light, pH, drought stress, salinity, heat and smoke

Singarayer Florentine, Sandra Weller, Alannah King, Arunthathy Florentine, Kim Dowling, Martin Westbrooke and Bhagirath S. Chauhan

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.

Published online 14 February 2018

CP17357Combining ability and heterosis analysis for mineral elements by using cytoplasmic male-sterile systems in non-heading Chinese cabbage (Brassica rapa)

Fei Xie, Jun Zha, Hongyu Tang, Yuying Xu, Xujia Liu and Zhengjie Wan

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.

Published online 14 February 2018

CP17259Phenotypic and metabolic variation among spring Brassica napus genotypes during heat stress

C. B. Koscielny, J. Hazebroek and R. W. Duncan

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.

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