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Soil and water conservation measures improve soil carbon sequestration and soil quality under cashews

International Journal of Sediment Research 2021年第2期36卷 190-206页

作者： Gopal Ramdas Mahajan Bappa Das Sandrasekaran Manivannan Begur Lakshminarasimha Manjunath Ram Ratan Verma sujeet Desai Rahul Mukund Kulkarni Ashish Marotrao Latar Reshma Sale Dayesh Murgaonkar Kiran Puna Patel Shaiesh Morajkar Ashwini Desai Natasha Barnes Heena Mulla Natural Resource Management ICAR-Central Coastal Agricultural Research Institute ICAR-Indian Institute of Soil and Water Conservation Regional Centre Division of Fruit Crops ICAR-Indian Institute of Horticultural Research Division of Crop Production Indian Institute of Sugarcane Research Institute of Agricultural Sciences Banaras Hindu University Biological Oceanography Division CSIReNational Institute of Oceanography Goa University

Land degradation is becoming a serious problem in the west coast region of India where one of the world’s eight biodiversity hotspots, the ‘Western Ghats’, is present. Poor land management practices and high rainfall have led to increasing problems associated with land degradation. A long-term(13-year)experiment was done to evaluate the impact of soil and water conservation measures on soil carbon sequestration and soil quality at three different depths under cashew nut cultivation on a 19% slope. Five soil and water conservation measures-continuous contour trenches, staggered contour trenches, halfmoon terraces, semi-elliptical trenches, and graded trenches all with vegetative barriers of Stylosanthes scabra and Vetiveria zizanoides and control were evaluated for their influence on soil properties,carbon sequestration, and soil quality under cashews. The soil and water conservation measures improved significantly the soil organic carbon, soil organic carbon stock, carbon sequestration rate and microbial activity compared to the control condition(without any measures). Among the measures tested, continuous contour trenches with vegetative barriers outperformed the others with respect to soil organic carbon stock, sequestration rate, and microbial activity. The lower metabolic quotient with the measures compared to the control indicated alleviation of environmental stress on microbes. Using principal component analysis and a correlation matrix, a minimum dataset was identified as the soil available nitrogen, bulk density, basal soil respiration, soil p H, acid phosphatase activity, and soil available boron and these were the most important soil properties controlling the soil quality. Four soil quality indices using two summation methods(additive and weighted) and two scoring methods(linear and non-linear) were developed using the minimum dataset. A linear weighted soil quality index was able to statistically differentiate the effect of soil and water conservation me

关键词： Land degradation Microbial activity Microbial biomass carbon Minimum dataset Soil erosion Western Ghats

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A roadmap for research in octoploid strawberry

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Horticulture Research 2020年第1期7卷 2300-2316页

作者： Vance M.Whitaker Steven J.Knapp Michael A.Hardigan Patrick P.Edger Janet P.Slovin Nahla V.Bassil Timo Hytönen Kathryn K.Mackenzie Seonghee Lee Sook Jung Dorrie Main Christopher R.Barbey sujeet Verma University of Florida Institute of Food and Agricultural SciencesGulf Coast Research and Education CenterWimaumaFlorida 33598USA Department of Plant Sciences University of CaliforniaDavisCA 95616USA Department of Horticulture Michigan State UniversityEast LansingMI 48824USA USDAARS Genetic Improvement of Fruits and Vegetables Laboratory BeltsvilleMA 20705USA USDA-ARS National Clonal Germplasm Repository CorvallisOR 97333USA Department of Agricultural Sciences Viikki Plant Science CentreUniversity of HelsinkiHelsinki 00790Finland Organismal and Evolutionary Biology Research Programme Faculty of Biological and Environmental SciencesViikki Plant Science CentreUniversity of HelsinkiHelsinki 00790Finland NIAB EMR Kent ME196BJUK Department of Horticulture Washington State UniversityPullmanWA 99164USA

The cultivated strawberry(Fragaria×ananassa)is an allo-octoploid species,originating nearly 300 years ago from wild progenitors from the *** that time the strawberry has become the most widely cultivated fruit crop in the world,universally appealing due to its sensory qualities and health *** recent publication of the first highquality chromosome-scale octoploid strawberry genome(***)is enabling rapid advances in genetics,stimulating scientific debate and provoking new research *** this forward-looking review we propose avenues of research toward new biological insights and applications to *** these are the origins of the genome,characterization of genetic variants,and big data approaches to *** areas of research in molecular biology will include the control of flowering,fruit development,fruit quality,and plant–pathogen *** order to realize this potential as a global community,investments in genome resources must be continually augmented.

关键词： straw cultivated looking

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Clarifying sub-genomic positions of QTLs for flowering habit and fruit quality in U.S. strawberry (Fragaria×ananassa) breeding populations using pedigree-based QTL analysis

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Horticulture Research 2017年第1期4卷 85-93页

作者： sujeet Verma Jason D Zurn Natalia Salinas Megan M Mathey Beatrice Denoyes James F Hancock Chad E Finn Nahla V Bassil Vance M Whitaker IFAS/Department of Horticulture University of FloridaGulf Coast Research and Education Center14625 CR 672Wimauma33598FLUSA USDA-ARS National Clonal Germplasm Repository 33447 Peoria RoadCorvallis97333ORUSA Department of Horticulture Oregon State University4017 Agriculture and Life Sciences BuildingCorvallis97331ORUSA Department of Horticulture UMR 1332 Biologie du Fruit et PathologieINRAUniv.BordeauxVillenave d’OrnonF-33140France Michigan State University East Lansing48824MIUSA USDA-ARS HCRU3420 NW Orchard AvenueCorvallis97330ORUSA

The cultivated strawberry(Fragaria×ananassa)is consumed worldwide for its flavor and nutritional *** analysis of commercially important traits in strawberry are important for the development of breeding methods and tools for this *** several quantitative trait loci(QTL)have been previously detected for fruit quality and flowering traits using low-density genetic maps,clarity on the sub-genomic locations of these QTLs was *** discoveries in allo-octoploid strawberry genomics led to the development of the IStraw90 single-nucleotide polymorphism(SNP)array,enabling high-density genetic maps and finer resolution QTL *** this study,breeder-specified traits were evaluated in the Eastern(Michigan)and Western(Oregon)United States for a common set of breeding populations during 2 *** QTLs were validated for soluble solids content(SSC),fruit weight(FWT),pH and titratable acidity(TA)using a pedigree-based QTL analysis *** fruit quality,a QTL for SSC on linkage group(LG)6A,a QTL for FWT on LG 2BII,a QTL for pH on LG 4CII and two QTLs for TA on LGs 2A and 5B were *** addition,a large-effect QTL for flowering was detected at the distal end of LG 4A,coinciding with the FaPFRU *** haplotype analysis in the FaPFRU region indicated that the homozygous recessive genotype was highly predictive of seasonal *** probes in the FaPFRU region may help facilitate marker-assisted selection for this trait.

关键词： breeding straw Fragaria

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