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OverviewEffects of root and shoot genotypes on productivity and physiology of loblolly pine (Pinus taeda L.) seedlings were evaluated in contrasting nutrient regimes. Twelve-week-old seedlings from contrasting provenances were grafted reciprocally to facilitate distinction of rootstock and scion effects. Five families each from mesic and xeric regions were planted in a split-plot design on a nutrient-poor site. Half of the plots were fertilized annually. Total biomass production among families was positively related to proportional biomass allocation to roots. Rootstock did affect stem growth efficiency. Different root genotypes were associated with subtle changes in biomass allocation. Provenances differed in leaf stomatal conductance but not in net photosynthesis. Rootstock affected stomatal conductance, but not WUE of scions. Rootstocks also affected leaf carbon isotope content (C13), in that xeric rootstocks were associated with lower C13. The findings may have utility in genotype selection for environments where soil water limits growth. Results should be informative and useful for tree biology scientists, plant breeders, and plant physiologists. Full Product DetailsAuthor: James GrissomPublisher: Scholars' Press Imprint: Scholars' Press Dimensions: Width: 15.20cm , Height: 0.70cm , Length: 22.90cm Weight: 0.181kg ISBN: 9783639702453ISBN 10: 363970245 Pages: 116 Publication Date: 12 December 2013 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In stock We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |