FLOWER BROWNING AS INFECTION SOURCE WITH ANTHRACNOSE ON JUJUBE
Journal Title: FRUIT GROWING RESEARCH - Year 2016, Vol 0, Issue
Abstract
In the main producing province of jujube Zizyphus jujuba, Gyeongsnagbukdo, disorder of jujube flowers was found. The symptoms were browning of petal and dropping of flowers without fruit setting. The damaged flowers were collected and investigated, and confirmed that disorder of flower was caused on infection by Colletotrichum gloeosporioides. C. gloeosporioides was isolated in 95.4% of discolored flower collected in Gyeongsan area, Aerial mycelium was white in early growth stage but turn to grayish with age. Orange color spore masses were produced outward from the center of the culture. The conidia were cylindrical with both apices rounded or with one apex rounded and the other end pointed. The conidial sizes were 9.2-13.2 x 3.2-5.8 µm. Apressoria were dark grey, ovate to clavate, and size was 5.9-7.2x4.2-5.1 µm. Bark and fruiting twig were surveyed to know overwintering place of C. gloeosporioides and the results are following that C. gloeosporioides was abundantly isolated from fruiting twigs, especially including fruiting twig appeared previous year, but not isolated from bark. This means that the reservoir of infection of anthracnose was considered as fruiting twig appeared previous year.
Authors and Affiliations
Seung-Han Kim, Seok-Hee Park, Min-ki Kim, Sook-Hee Lee
Keywords
Related Articles
- EP ID EP244028
- DOI -
- Views 133
- Downloads 0
RESEARCHES REGARDING VARIETY- ROOTSTOCK INTERACTION IN THE NURSERY FOR SWEET CHERRY, PEACH-NECTARINE AND APRICOT
The researches were carried out at RIFG Piteşti Maracineni, aiming to study in the nursery field behavior of varieties homologated in Romania or introduced from the European Union, grafted on Romanian rootstocks. For swe...
AGROBIOLOGICAL ASSESSMENT OF SOME ROMANIAN SEA BUCKTHORN GENOTYPES
Recently the sea buckthorn is come a cultivated species. The research on this species should be focused on more efficient harvesting method, new cultivars suitable to European climate; bigger yields by right cultivation...
CHARACTERISTICS OF WALNUT TREE CULTIVARS FROM NORTH - EASTERN AREA OF ROMANIA
Research was conducted during 2012 - 2016 at 13 walnut tree cultivars from experimental plot existing in Research Station for Fruit Growing Iaşi, Romania. Observations and determinations concerning the trees’ vigour trou...
THE EFFECT OF THE EXTREME VALUES OF THE AIR TEMPERATURE FROM THE LAST TWO WINTERS IN ROMANIA ON THE VIABILITY OF THE APRICOT, PEACH AND SWEET CHERRY FLOWER BUDS
From the climate factors, low temperature is one of the most important abiotic factor limiting growth, productivity and distribution of plants on Earth. The abilities of cold-hardy plants to resist de-acclimation during...
RESEARCH REGARDING FRUITS QUALITY OF SOME SOUR CHERRY GENOTYPES FROM NATIONAL COLLECTION
Sour cherry is a particularly valuable fruit species due to its food, technological, therapeutic and agrobiological traits. However, in Romania the sour cherry is cultivated on a small area of only 5,000 ha. In the last...