Variation in ecogeographical traits of pecan cultivars and provenances

摘要: Variation in Ecogeographical Traits of Pecan Cultivars and Provenances. (August 2007) Madhulika Sagaram, B.S., Acharya N.G. Ranga Agricultural University; M.S., West Texas A&M University Chair Advisory Committee: Dr. Leonardo Lombardini [Carya illinoinensis (Wangenh.) C. Koch] is a species distributed over an area varied geographic climatic variation the Unites States Mexico providing potential for anatomical physiological adaptation within cultivars provenances (i.e., origin seed). An assessment leaf traits pecan (Pawnee, Mohawk Starking Hardy Giant) collected from three locations (Tifton, GA., Chetopa, KS., Stillwater, OK.) was conducted to provide understanding patterns ecogeographic natural range. The stomatal density 'Pawnee’ (404 stomata/mm) intermediate between that ‘Mohawk’ (363 ‘Starking Giant’ (463 stomata/mm). There were differences among at same location but there no cultivar grown distinct locations. study suggested pecans are cultivar-specific rather than being determined by environmental factors. stability certain characteristics, such as density, different confirms these can be used screening with desirable characteristics breeding development.