บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Biochemical changes at some peach and nectarine varieties and hybrids linked with the resistance level to Spharerotheca pannosa var. Persicae

Stefania Toma, Antonia Ivascu , Cristina Petrisor and Veronica Lazar

Proceedings of 26th International Horticultural Congress. Volume of Abstract . Toronto, Canada, 11-17 August, 2002. Abstract S12-P-54. pp. 336.

2002

บทคัดย่อ

Biochemical Changes at Some Peach and Nectarine Varieties and Hybrids Linked with Resistance Level to Sphareotheca Pannosa var Pericae

The product had in view the study of some biochemical compounds such as : free, total and linked water content, dry matter, nitrogen and protein content along with tannin level at some peach and nectarine varieties and hybrids to prove the relation between these biochemical traits and the biotic stress resistance degree. Studies have been done at the Research Station for Fruit Tree Growing Baneasa-Bucharest situated in the south area of Romania during 1997-2000. The siytg zone of Romania has extremely favorable ecological conditions for peach and nectarine growing being affected in several years by various fungi. One of most aggressive pathogen is Sphaerotheca pannosa var. persicae. We proved that this agent has a great influence on plant methabolism. Total water content was significally increased in contrast with the dry matter and tannin content which was reduced in case of resistant cultivars (‘Victoria’ , ‘Nectared 7’, ‘HB11-40’). Total nitrogen and protein level has less influence on resistance behaviour to powdery mildew at all the biological material analyzed. All the genetic material found as resistant to powdery mildew is used in the present breeding peach program in Romania.