INTRODUCTION An experiment was conducted beginning in 2003 at a certified organic apple orchard in Iowa to evaluate insect pest and disease incidence in four scab– resistant apple cultivars (Delate et al., 2005). This on-farm experiment was resumed in 2007 after new grant funds were secured to compare pest loads with previous years’ results. The objective of the on-farm demonstration was to com...

the level of self-compatibility of the 48 pre-selected apple cultivars, using their own pollen, the genetic capacity of flowering, flower-fruit conversion ratio, multiple fruit fall and bearing preservation during 4 successive biological growth stages were examined through two main treatments of self and cross pollination, in horticulture research station of kamalshahr in karaj (iran). the frui...

Field A: Source planting of all transgenic apple plants expressing sense/antisense S6PDH. This planting was already in existence at the start of this project and contains all of the source materials of different transgenic clones planted in a randomized design on their own roots at a 15x15 ft spacing. The plot contains 354 apple trees of which 53 are control trees of the golden delicious apple ...

fruit yield efficiency and some vegetative characteristics of commercial and spur type apple. cultivars was evaluated in dr. nakhjavani field station, orumieh, iran, in 2008 and 2009 growing seasons. apple cultivars included: red spur, red chief, golden spur, yellow spur, fujii, red delicious, cooper spur, red cooper spur, jonathan, golden delicious, oregon spur, jonagold. the experimental desi...

rosy apple aphid, dysaphis plantaginea (passerini), with worldwide distribution is an important pest of apple orchards. host plant resistance is an essential component of integrated management of this insect pest. we investigated the resistance of seven apple cultivars, malus domestica (borkhausen), namely granny smith, starkrimson, golden smoothee, red delicious, golden delicious, boshghabi, a...

ABSTRACT Nonseasonal availability of pomaceous flowers could improve laboratory detection and prefield testing of biocontrol agents for fire blight of pear and apple. Crab apple was selected as a model because of its high flower productivity on 1-year-old wood, high susceptibility to fire blight, and availability from nurseries. Cultivars Manchurian and Snowdrift were manipulated to bloom once ...

The proverb “An apple a day keeps the doctor away” addressing the health effects of the fruit. Apple is the most important temperate fruit crop and has been cultivated in Asia and Europe from antiquity. Apple is a fruit of temperate climate and it is native to many parts of Europe and Asia [1]. Worldwide, apple is the four most broad produced short-lived fruits, and in more than 94 countries, i...

Several species of the genus Fusarium can cause apple fruit to rot while stored. Since Fusarium taxonomy is very complex and has constantly been revised and updated over the last years, the aim of this study was to identify Fusarium species from rotten apples, based on combined morphological characteristics and molecular data. We identified 32 Fusarium isolates from rotten apple fruit of cultiv...

Introgression of traits from wild germplasm into pip fruit cultivars by means of classical breeding is painstakingly slow. Introgression of e.g., the apple scab resistance gene Vf from Malus floribunda 821 into marketable high quality apple cultivars took approximately 50 years. In the mean time the Vf resistance is being broken down in Europe. For durable resistance, different resistance genes...