บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Calcium and dry matter accumulation in Hayward kiwifruit.

Buxton K.N., Ferguson I.B., Hewett E.w.

5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004, p.83

2004

บทคัดย่อ

Calcium and dry matter accumulation in Hayward kiwifruit.   Despite recognition of the link between kiwifruit internal quality and fruit dry matter (DM) and calcium (Ca) content, factors affecting DM and /or Ca accumulation are poorly characterized.Ferguson et al. (2003*) describes a simple positive linear relationship between increasing Ca and increasing percentage DM, suggesting that similar factors influence accumulation of these two fruit components.The reason for this is not known, but is surprising considering that Ca travels primarily in the xylem, whilst carbohydrates are transported in the phloem.

This research further explored the link between Ca and DM accumulation.Fruit Ca, and to a lesser extent, carbohydrate accumulations patterns were altered by manipulations to the vine canopy and /or the application of TIBA. However, fruit from long, non-terminated laterals always had a higher DM and Ca content than fruit from short-terminated laterals, regardless of treatment applied.Specific canopy management practices may alter general fruit carbohydrate and mineral nutrient accumulation patterns directly by impacting o­n fruit metabolism or indirectly by altering the fruit hormone balance.Results suggest these direct and indirect effects may be o­n the processes of cell division and enlargement, and/or vascular differentiation.

 

*Ferguson, I.B.; Thorp, T.G.: Barnett, A.M.; Boyd, L.M. & Triggs, C.M.2003:Inorganic nutrient concentrations and physiological pitting in ‘Hayward’ kiwifruit.J. Hort. Sci. 78(4) 497-504.