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

Crop & Pasture Science

Volume 75 Number 10 2024

CP24227Liming acidic soils creates profits, land use options but often more emissions

S. Kharel, C. d’Abbadie, A. Abadi Ghadim, C. Gazey and R. Kingwell 0000-0003-0324-9488

Increased soil acidification is a challenge in modern farming. Liming can be an effective, yet expensive soil ameliorant. This research finds that liming is often profitable yet mostly increases emissions, but it does help sustain more diverse land use sequences.

Wheat, a vital global food source, faces production limitations due to climate-induced stresses. Developing resilient cultivars is crucial. Genetic diversity aids in identifying variations for improved cultivars. This study utilised iPBS-retrotransposons to characterise wheat germplasm, yielding 170 bands. Genetic distance highlighted G9 and G60 as genetically distinct genotypes. Different methods identified three or four distinct groups of genotypes amongst the studied germplasm. This informs targeted breeding strategies for enhanced wheat varieties.

This article belongs to the Collection Plant breeding- and genetics-based tools for food security under changing climate.

Granulation, a physiological disorder in which citrus fruit are white, dry and tasteless, is a significant problem for Imperial mandarins in Australia. We discovered that excessive irrigation and insufficient nitrogen fertilisation are important causes of granulation and three key strategies to minimise granulation are to maintain high crop loads, reduce irrigation after flowering, and apply sufficient nitrogen in winter. This research will improve fruit quality for the consumer and financial returns to growers.

CP24156Microbial genes highlight different trends in short term for N cycling in historical alpine pastures

Salvatore Raniolo 0000-0003-1989-0376, Laura Maretto, Maurizio Ramanzin, Piergiorgio Stevanato, Giuseppe Concheri, Andrea Squartini and Enrico Sturaro

Soil microbial communities are fundamental for ecosystem nutrient cycles, but they are relatively underexplored in alpine pastures – seminatural grasslands important for mountain livestock systems. We investigated microbial functions related to the nitrogen cycle in three historical alpine pastures for one summer. Microbial nitrogen functions showed a general inertia in respect to soil variation and grazing disturbance. This has ramifications for future improvement of pasture management in mountain livestock systems.

CP24189A holistic view of potato genetics: meta-analysis of QTLs controlling agronomic and morphological traits

Zahra Hajibarat, Abbas Saidi 0000-0001-6721-5389, Mehrshad Zeinalabedini, Vahid Shariati, Ahmad Mousapour Gorji and Mohammad Reza Ghaffari

For decades, potato breeding has been hindered by high diversity and genetic complexity. We identified the individual locations of genes that contribute to potato yield, by analysing data from 14 prior studies. This knowledge will accelerate breeding programmes.

This article belongs to the Collection Plant breeding- and genetics-based tools for food security under changing climate.

Brassica juncea is farmed around the world, and varies widely in flowering time and the need for cold temperatues to trigger flowering. We used a range of molecular techniques to understand the genetics and evolution underpinning that variation, in contemporary breeds and ancestor species.

This article belongs to the Collection Plant breeding- and genetics-based tools for food security under changing climate.

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