Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userA preliminary study of Nematodes Associated with Chickpea Crop at Izra’a Research Center in Dara’a
دراسة أولية للنيماتودا المصاحبة لجذور الحمص في مركز بحوث ازرع في محافظة درعا
1169
0 9
0
(
0
)
Added by
Damascus University ورقة بحثية
Publication date
2004
fields
Plant Protecion
and research's language is
العربية
Created by
Shamra Editor
Ask ChatGPT about the research
تم تقصي أجناس النيماتودا المصاحبة لنبات الحمص من صنف بلدي في منطقة زراعة الحمص في مركز بحوث ازرع في محافظة درعا خلال المدة من أول نيسان / 2003 إلى نهاية حزيران/ 2003 و تضمنت الدراسة فحص النيماتودا و تعريفها، و تحديد كثافتها، و حساب تكرارها (%) و تميز كل (PV) جنس منها في أربعين عينة جمعت من جذور النباتات و من التربة المحيطة بالجذور كل على حدة ، أظهرت الدراسة وجود ثمانية أجناس من النيماتودا المتطفلة على النبات و سبعة عشر جنسًا من النيماتودا التي تتبع طرائق تغذية متنوعة مصاحبة لنباتات الحمص.
A survey to record the genera of nematodes associated with chickpea of domestic variety, which are planting at Izra’a Research center in Dara’a Governorate, was carried out during the period from April 2003 till June 2003. Nematodes were extracted, examined and identified to genus. Population density, frequency (%), and prominence value (PV) were calculated for each genus of 40 samples were collected from the root rhizosphere soil and from plant roots itself. Results showed that eight genera of plant-parasitic nematodes, and seventeen genera of other nematode groups were associated with chikpea plants.
References used
Castillo, P, M. P. Rodringuez, J. A. Navas-Cortes, and R. M. Jimenez-DIaz. (1998). Interactions of Pratylenchus thornei and Fusarium oxysporum f. sp.ciceri on Chickpea. Phytopathology. 88 (8) P:82-83
Di Vito, M, N. Greco, and M. C. Saxena. (1992). Pathogenicity of Pratylencus thornei on chickpea in Syria. Nematologia-Mediterranea. 20 : 71-73
rate research
Read More
A field study has been carried out in order to know the important species
belonging to the family Syrphidae Diptera . in some field in Ezraa & jellien of
Daraa governorate during the period 1/3 /2003 till 30/8/2003 .
A survey was conducted to determine the frequency and mean densities of
plant-parasitic nematodes associated with cotton crop (Gossypium hirsutum L.)
after the harvesting season 2008 in Syria. Results showed that twelve genera of
plant-parasitic n
ematodes were found associated with cotton crop roots. The
distribution of nematode genera varied between the Syrian governorates,
Pratylenchus spp., Meloidogyne spp. and Rotylenchulus infect most cotton fields
in all syrian governorates. The distribution was relatively uniform between the
governorates. They occurred in 80.7%, 46.6% and 32.95%, respectively, of
tested fields with an average density of 137.2, 59.6 and 574.3 juveniles/100 cm3
soil, respectively. meanwhile, the genus Tylenchorhynchus was found in central
region only. Rotylenchulus was more prevalent in the heavier soils, but
Meloidogyne. was not influenced by soil type. The other nematode genera
detected in this survey were less frequent, their frequency of occurrence were
for Hoplolaimus (19.3%), Scutellonema (31.8%), Tylenchorhynchus (31.8%),
Helicotylenchus (30.7%), Rotylenchus (36.4%), Tylenchus (18.2%), Xiphinema
(3.4%).
Afield survey of ckickpea chlorotic stunt virus (CPCSV) was conducted in some plantation areas in Lattakia province. A total of 252 samples were collected from plants showing chlorotic and stunting symptoms from 54 field. Results of Tissue Blot Immun
obonding Assay has shown the presence of CPCSV in some plantation areas. The percentage of CPCSV varied in samples collected from fields, the highest percentage was 33.33% in Ras-elain aria and the lowest was 7.69% in Elbourjan aria.
Field survey was conducted to identify plant nematode genera associated
with maize crop during the period August-October 2003. The study was carried
out at two locations: Kharabo station (Damascus countryside) and Al-Mraieh
station (Deir Al-zowr)
in Syria. 36 complex samples were collected from roots
and rhizosphere soil; nematodes were extracted by two methods Sieving and
Baermann funnel, examined under microscope for identifi cation. Population
density and absulute frequency for each genera were calculated. Results of field
survey showed the presence of 14 genera of plant parasitic, 4 fungivorous, and
12 omnivorous nematodes in maize roots and rhizosphere soil .
The research aimed at determining the effect of work team size (number of members
per team) on the effectiveness of teams working at the Scientific Agricultural Research
Center (SARC) in Lattakia. This is in addition to determining the best team si
ze for these
teams. The study used the T7 Model, a questionnaire used for measuring work team
effectiveness. The questionnaire was distributed on to 190 members who constituted 44
teams. The 44 teams were the study sample chosen from the whole research community
which constituted the work teams in (SARC)
The study revealed a number of results of which are the following: there is a
significant negative correlation between team size and all the internal factors affecting
effectiveness, together with significant differences between the effectiveness of small
teams and big teams. However, there is no correlation between team size and the external
factors affecting team effectiveness.
suggested questions
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
