The U.S. National Cotton Germplasm Collection – Its Contents, Preservation, Characterization, and Evaluation

Percy, Richard G.; Frelichowski, James; Arnold, Mark D.; Campbell, T.B.; Dever, Jane K.; Fang, David D.; Hinze, Lori L.; Main, Jodi Scheffler Dorrie; Sheehan, Monica A.; Ulloa, Mauricio; Yu, Jing; JohnYu,

doi:10.5772/58386

Cited by 11 publications

(13 citation statements)

References 68 publications

(72 reference statements)

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“…A panel of 22 cotton (Gossypium hirsutum L.) accessions (Supplementary The experimental field site of this study, located in the low desert of central Arizona, provided optimal meteorological conditions for studying the response of plants to the effect of heat and drought stress. The panel consisted of three commercial check accessions (FiberMax 958, DeltaPine 493, and DeltaPine 393) and 19 accessions from the Gossypium Diversity Reference Set (Percy et al, 2014). The accessions of the panel were chosen to provide a representation of the genetic diversity contained within the entire GDRS collection.…”

Section: Plant Material Experimental Design and Soil Measurementsmentioning

confidence: 99%

Assessing Drought and Heat Stress-Induced Changes in the Cotton Leaf Metabolome and Their Relationship With Hyperspectral Reflectance

et al. 2021

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The study of phenotypes that reveal mechanisms of adaptation to drought and heat stress is crucial for the development of climate resilient crops in the face of climate uncertainty. The leaf metabolome effectively summarizes stress-driven perturbations of the plant physiological status and represents an intermediate phenotype that bridges the plant genome and phenome. The objective of this study was to analyze the effect of water deficit and heat stress on the leaf metabolome of 22 genetically diverse accessions of upland cotton grown in the Arizona low desert over two consecutive years. Results revealed that membrane lipid remodeling was the main leaf mechanism of adaptation to drought. The magnitude of metabolic adaptations to drought, which had an impact on fiber traits, was found to be quantitatively and qualitatively associated with different stress severity levels during the two years of the field trial. Leaf-level hyperspectral reflectance data were also used to predict the leaf metabolite profiles of the cotton accessions. Multivariate statistical models using hyperspectral data accurately estimated (R2 > 0.7 in ∼34% of the metabolites) and predicted (Q2 > 0.5 in 15–25% of the metabolites) many leaf metabolites. Predicted values of metabolites could efficiently discriminate stressed and non-stressed samples and reveal which regions of the reflectance spectrum were the most informative for predictions. Combined together, these findings suggest that hyperspectral sensors can be used for the rapid, non-destructive estimation of leaf metabolites, which can summarize the plant physiological status.

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Section: Plant Material Experimental Design and Soil Measurementsmentioning

confidence: 99%

Assessing Drought and Heat Stress-Induced Changes in the Cotton Leaf Metabolome and Their Relationship With Hyperspectral Reflectance

et al. 2021

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“…Germplasm banks generally hold a wide range of targeted cultivated species and wild relatives. Globally, the key germplasm resources for cotton are based in China ( Jia et al, 2014 ), India ( Narayanan et al, 2014 ), Pakistan ( Rahmat et al, 2014 ), France ( Dessauw et al, 2004 ), Uzbekistan ( Sanamyan et al, 2014 ), Australia ( Stiller and Wilson, 2014 ), and the United States ( Percy et al, 2014 ; Zeng, 2014 ).…”

Section: Core Collectionsmentioning

confidence: 99%

Core Collections: Is There Any Value for Cotton Breeding?

2022

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Global plant breeding activities are reliant on the available genetic variation held in extant varieties and germplasm collections. Throughout the mid- to late 1900s, germplasm collecting efforts were prioritized for breeding programs to archive precious material before it disappeared and led to the development of the numerous large germplasm resources now available in different countries. In recent decades, however, the maintenance and particularly the expansion of these germplasm resources have come under threat, and there has been a significant decline in investment in further collecting expeditions, an increase in global biosecurity restrictions, and restrictions placed on the open exchange of some commercial germplasm between breeders. The large size of most genebank collections, as well as constraints surrounding the availability and reliability of accurate germplasm passport data and physical or genetic characterization of the accessions in collections, limits germplasm utilization by plant breeders. To overcome these constraints, core collections, defined as a representative subset of the total germplasm collection, have gained popularity. Core collections aim to increase germplasm utilization by containing highly characterized germplasm that attempts to capture the majority of the variation in a whole collection. With the recent availability of many new genetic tools, the potential to unlock the value of these resources can now be realized. The Commonwealth Scientific and Industrial Research Organisation (CSIRO) cotton breeding program supplies 100% of the cotton cultivars grown in Australia. The program is reliant on the use of plant genetic resources for the development of improved cotton varieties to address emerging challenges in pest and disease resistance as well as the global changes occurring in the climate. Currently, the CSIRO germplasm collection is actively maintained but underutilized by plant breeders. This review presents an overview of the Australian cotton germplasm resources and discusses the appropriateness of a core collection for cotton breeding programs.

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“…Several Gossypium species were documented and characterized, including wild and exotic species, like Gossypium thurberi, Gossypium aridum, Gossypium sturtianum, among many others. A list of all screened species can be found in Percy et al [69].…”

Section: Our Programmentioning

confidence: 99%

Stories from the Greenhouse—A Brief on Cotton Seed Germination

Maeda¹,

Wells²,

Sheehan³

et al. 2021

Plants

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Seed germination is the basis for the proliferation of sexual-reproducing plants, efficient crop production, and a successful crop improvement research program. Cotton (Gossypium spp.), the subject of this review, can be often sensitive to germination conditions. The hardness of the cotton seed coat, storage, extreme temperatures, and dormancy are some of the factors that can influence cotton seed germination. Research programs conducting studies on exotic and wild cotton species are especially affected by those hurdles. Here, we briefly review the challenges of cotton seed germination and some of the approaches our cotton breeding program explored throughout the years.

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The U.S. National Cotton Germplasm Collection – Its Contents, Preservation, Characterization, and Evaluation

Cited by 11 publications

References 68 publications

Assessing Drought and Heat Stress-Induced Changes in the Cotton Leaf Metabolome and Their Relationship With Hyperspectral Reflectance

Assessing Drought and Heat Stress-Induced Changes in the Cotton Leaf Metabolome and Their Relationship With Hyperspectral Reflectance

Core Collections: Is There Any Value for Cotton Breeding?

Stories from the Greenhouse—A Brief on Cotton Seed Germination

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