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 4 2018

CP17306Grain mineral density of bread and durum wheat landraces from geochemically diverse native soils

José Francisco Vázquez, Efraín Antonio Chacón, José María Carrillo and Elena Benavente
pp. 335-346

Breeding of wheat cultivars with enhanced mineral nutritional quality requires mineral rich donor genotypes but also molecular markers that assist the selection of superior lines. We have identified a panel of dense-mineral wheat landraces collected on locations with contrasting soil pH and mineral content. The likely existence of different sets of genes controlling the grain mineral concentration of these locally adapted varieties makes them valuable for biofortification breeding and to approach the genetic dissection of this complex trait.

We detected quantitative trait loci (QTLs) for sensory quality and textural properties of Chinese white noodles. Twenty-six QTLs for sensory quality traits and 14 QTLs for textural quality traits were identified. Nine chromosomes (1A, 2B, 2D, 3B, 4B, 5A, 5D, 6B and 7B) and five chromosomes (1B, 3A, 4A, 5B and 5D) were found for the first time to be associated with noodle sensory and textural quality, respectively.

CP17410Changes in DNA methylation are associated with heterogeneous cytoplasm suppression of the multi-ovary gene in wheat (Triticum aestivum)

Jialin Guo, Gaisheng Zhang, Huali Tang, Yulong Song, Shoucai Ma, Na Niu and Junwei Wang
pp. 354-361

The multi-ovary trait of wheat variety DUOII is controlled by a dominant gene, and heterogeneous cytoplasm can suppress the expression of that gene. This study investigated the relationship between DNA methylation status and this suppression phenomenon, and found that heterogeneous cytoplasm could change the DNA-methylation status and cause methylation–demethylation processes at many sites. These results provide essential background for further studies on the underlying mechanisms of heterogeneous cytoplasm suppression of the expression of the multi-ovary gene in wheat.

CP17471Chloroplast structure and DNA methylation polymorphisms in an albino mutant of wheat (Triticum aestivum) cv. Xinong 1376

Yulong Song, Huali Tang, Xiangsheng Ke, Jialin Guo, Shuangxi Zhang, Junwei Wang, Na Niu, Shoucai Ma, Huiyan Zhao and Gaisheng Zhang
pp. 362-373

An albescent line is an excellent source material to study photosynthetic mechanisms in higher plants. This study investigated the relationship between DNA methylation and leaf colour variation in an albino mutant of wheat cv. Xinong 1376 by methylation-sensitive amplification polymorphism analysis, and used cytological analysis to investigate the ultrastructure of chloroplasts in the mutant. Many genes were found to be methylated (demethylated) in green (white) leaves at the reviving stage, leading to a decreased (increased) chlorophyll supply and abnormal (normal) intracellular structure, ultimately resulting in a change of leaf colour from green (white) to white (green) in the Xinong 1376 albino mutant.

CP17397Changes in seed composition and germination of wheat (Triticum aestivum) and pea (Pisum sativum) when exposed to high temperatures during grain filling and maturation

Carolyne Dürr, Sophie Brunel-Muguet, Christine Girousse, Annabelle Larmure, Colette Larré, Agnès Rolland-Sabaté and Marie-Hélène Wagner
pp. 374-386

This study identified the detrimental effects of heat stress after the pollination stage on grain quality in two temperate crops, wheat and pea. Maximum daily temperatures of only 25-35°C during grain filling decreased seed weight and led to changes in grain composition detrimental to their end-use values. Exposure to high temperatures during grain filling or desiccation led to increased seed conductivity and negative effects on seed germination.

CP17309Evaluation of lentil varieties and farming system effect on seed damage and yield loss due to bruchid (Bruchus spp.) infestation

Dimitrios N. Vlachostergios, Anastasios S. Lithourgidis, Dimitrios V. Baxevanos, Athanasios G. Mavromatis, Christos S. Noulas and Demetrios G. Roupakias
pp. 387-394

Aim of the study was to assess seed and yield loss (YL) due to bruchid infestation and to investigate lentil genotypic variability in response to bruchid damage. Mean YL was 8.4-fold higher under organic than conventional farming. Early flowering and small seed size were common traits of varieties with low YL. Two types of tolerant varieties were detected after evaluation for low YL in relation to high yield potential.

Widely grown soybean cultivars displayed the greatest level of Soybean mosaic virus (SMV) resistance against SC3 strain. Yellow–Huai-Hai region showed the highest level of comprehensive resistance against all the SMV strains. Throughout the soybean-breeding period (1923–2006), the SMV resistance of widely grown soybean cultivars evidently varied among strains, regions, and years, which could be mainly attributed to the pressure created by artificial selection.

CP17287Calorimetry, chemical composition and in vitro digestibility of sugarcane treated with calcium hydroxide

Alexandre M. Dias, Luís C. V. Ítavo, Júlio C. Damasceno, Camila C. B. F. Ítavo, Geraldo T. Santos, Diego M. S. Echeverria, Eva N. O. Gomes and Luciana Junges
pp. 406-410

This study provides important information regarding the use of calcium hydroxide in sugarcane hydrolysis and the use of calorimetry in forage evaluation. Sugarcane has been the major crop in Brazil for centuries, cultivated and processed using traditional agricultural and industrial methods. The alkaline treatment with calcium hydroxide improves the nutritive value of sugarcane. The release of energy is directly related to nutrient availability and ease of molecular breakage.

We assessed the effects of a calcium carbonate suspension on physiology, yield and some quality aspects of a tomato crop under three levels of deficit irrigation (I50, moderate; I25, moderate–severe; I0, severe). Leaf transpiration was significantly reduced in plants treated with the suspension. Application of calcium carbonate minimised fruit losses under I50 while ensuring great water saving and improving the nutraceutical properties of fruits.

CP17311Effect of tree density on competition between Leucaena leucocephala and Chloris gayana using a Nelder Wheel trial. I. Aboveground interactions

A. Nahuel A. Pachas, H. Max Shelton, Christopher J. Lambrides, Scott A. Dalzell and G. John Murtagh
pp. 419-429

Leucaena-grass pasture is one of the most profitable and productive pasture option for cattle production in Northern Australia. This study evaluated the aboveground interactions between leucaena and Rhodes grass when leucaena was planted at different tree densities. The productivity of leucaena and Rhodes grass was markedly affected by the competition between tree and grass components.

CP17231Shoot morphology and alkaloid content of Epichloë endophyte–Festuca sinensis associations

Tian Pei, Kuang Yu, Lin Weihu, Wang Jianjun and Nan Zhibiao
pp. 430-438

The effects of both host and endophyte on six Festuca sinensis -endophyte associations’ morphology performance and alkaloid content were evaluated. All E+ plants produced both the lolitrem B and peramine alkaloids. Host ecotype had large impacts whereas the endophyte only had a minor impact on associations’ performance. The results suggested that endophyte, host ecotype and their complex interaction affected performance of Festuca sinensis ecotypes.

Online Early

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

The combined application of indigenous PGPR (Serratia sp. and Bacillus subtilis) significantly increased wheat yield and quality besides saving 18 kg and 10 kg of Nitrogen and phosphorous on per hectare basis.

Published online 20 April 2018

CP17314Physiological responses of drought tolerance in orchardgrass (Dactylis glomerata) in association with persistence and summer dormancy

Fatemeh Saeidnia, Mohammad Mahdi Majidi, Aghafakhr Mirlohi and Benyamin Ahmadi

The genetic basis of physiological responses to drought and its association with productivity, persistence and summer dormancy is not clear in orchardgrass. Moreover, seasonal growth activity such as summer dormancy and autumn recovery has not been studied in Iranian native germplasm of orchardgrass nor in introduced germplasm from foreign countries. Summer dormancy may amend drought survival of orchardgrass genotypes leading to improved persistence and recovery vigour.

Published online 17 April 2018

CP17195Growth patterns of Phragmites karka under saline conditions depend on the bulk elastic modulus

Erum Shoukat, Irfan Aziz, Muhammad Zaheer Ahmed, Zainul Abideen and Muhammad Ajmal Khan

Role of water relations in growth of Phragmites karka (a potential biofuel crop) was studied. Better growth in 100 mM NaCl is related to efficient osmotic adjustment and lower bulk elasticity. Whereas, growth decline in 300 mM is linked with low turgor, decreased cell hydraulic capacitance and higher bulk elastic modulus.

Plant breeding continues to raise grain yields but progress is slowing. New remote-sensing methods could target selection traits related to yield in early generations following hybridisation and thereby boost breeding efficiency. The theory of such indirect yield selection is reviewed, and three promising traits, harvest index, fruiting efficiency and stomatal conductance, are discussed in detail.

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