The economic damage accompanying the fire blight is expressed both in loss of crops and costs associated with uprooting infected trees restoration fruit plantations.  Pear characterized highest rates susceptibility to blight. Development genetically resistant cultivars one crucial aspects managing blight, which would allow foregoing current economically or ecologically unsound methods such...

A survey was carried out in two states, six locations of south east Nigeria during the normal flowering period for three (3) consecutive years to evaluate intraspecific variations phenology African pear flowering. The different types species growing forest, distant and nearby farms, including homesteads were used. 60 trees 180 flowered branches sampled survey. Parameters collected include time ...

is very diMcult to prevent, has done great damage to comrnercially grown grape vines and apple and pear trees, among others, Unfertunately, despite its importance, little is known about the molecular or cellular biology of this fungus. This study is a part of our attempt te better understand the signal transduction pathways mediating the vegetative incompatibility of Rosellinia. In order to iso...

The present investigation was conducted to determine the effect of different quince clone rootstocks on phenological characteristics, flowering and fruit set ratios Hafif Çukurgöbek (HCG) loquat variety. ‘HCG’ variety budded Quince-A, Quince-C BA-29 were planted at 1.0 m × 0.5 inter intra-row spacing, respectively, used for study. experiment arranged as a completely randomized design with 5 rep...

The remobilization of storage nitrogen (N) is affected by growth characteristics young pear trees. Aboveground parts trees grafted on P. betulifolia grew more vigorously than that dwarfing rootstocks. Therefore, the N within vigorous rootstocks may be different from A 15N tracing experiment, including six groups one-year-old in 2016, was conducted to investigate mobilization 2016 2018. Results ...

1. The growth rate of organisms may be considered as a chemical reaction which gives the mature organism as its end-product. The organism grows at a definite rate which is, at any moment, proportional to the amount of growth yet to be made. 2. Shoots of young pear trees measured at weekly intervals during the growing season showed a rate similar to that of an autocatalytic reaction. 3. Young wa...