Selection of rootstocks resistant to Monosparascus cannonballus and effects on musckmelon yield

• Grant number: 11/50459-4
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2011
• End date: December 31, 2013
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: Leila Trevisan Braz
• Grantee: Leila Trevisan Braz
• Host Institution: Faculdade de Ciências Agrárias e Veterinárias (FCAV). Universidade Estadual Paulista (UNESP). Campus de Jaboticabal. Jaboticabal , SP, Brazil

Abstract

The development of this project has to objective to selection rootstocks resistant to M. cannonballus and the effects of each rootstock on the muskmelon yield. For both, the project will be divided in two tests. In the test I will be held the selection of rootstocks resistant to M. cannonballus. WiU be tested 31 genotypes of cucurbits for resistance to the pathogen through cultivation of plants for 60 days in artificially infested substrate. The seedlings will be evaluated using a rating scale based on the evolution of symptoms on hypocotyl, primary root and secondary roots. The second experiment will be conducted to evaluate the effects of rootstocks that stand out as resistant in the test I, on muskmelon yield in two cropping seasons. The rootstocks will be grafted melon 'Bonus nº 2' and 'Fantasy' and the type of grafting is cleft-filled. Will be evaluated the following characteristics: percentage of fixation at lhe time of transplanting, plant height, diameter of the bud region, total production (kg m-2), fruit mass (kg), transverse and longitudinal diameter of fruit (mm); index of fruit shape, diameter transverse and longitudinal locule (rnm), shape index locule, wall thickness (mm), flesh colar, roughness of the rind, soluble solids (SS), titratable acidity (TA), maturation index (SS / TA), firmness and vitamin C. After conducting the second experiment in two seasons, will be held joint analysis by ANOV A and Tukey test (5%). (AU)