Volume 15 No. 2

Influence of Heat on Seed Germination of the Three Acacia Species in the Sudan

Wed, 01 Jan 2014 00:00:00 GMT

Influence of Heat on Seed Germination of the Three Acacia Species in the Sudan Ahmed , Abdelgabar Sharaf Eldin The influence of temperature (dry heat) and electric burner on germination of Acaciasenegal, Acacia mellifera and Acacia laeta in Sudan was analyzed, in order to know the response of acacia seeds to dry heat treatments. Germination tests were carried out in plastic Petri dishes over 30 days. In general, the degree of seed germination promotion by dry heat treatments showed slight variation, the final germination level was not increased in all the studied species compared with the control with some exception. The thermal pretreatment with 45° C was not effective for the germination in Acacia senegal and Acacaia mellifera irrespective of heat exposure duration with the exception of Acacia laeta (North Kordofan, 20.25%). The germination rates after preheating were much lower than in mechanically scarified seeds by electric burner and closely resembled those of the untreated seeds, except for Acacia laeta (Gedarif), where it is t50 reached 11 days for temperature 45° C at two seconds. The response of these species to heat shock had no clear effects on germination. article

Asexual Propagation of Physic Nut (Jatropha curcas L.) Under Different Rooting Media and Hormones

Wed, 01 Jan 2014 00:00:00 GMT

Asexual Propagation of Physic Nut (Jatropha curcas L.) Under Different Rooting Media and Hormones Hammad , Ibrahim Mohamed Mahdi; El-Amin , Saifeldin Mohamed One of the main problems in jatropha cultivation is the poor seed germination.It is an open pollinated crop with high percent of cross pollination and genetically mixing. Use of cuttings will save seeds for oil production. Vegetative propagation, on the other hand, produces exact duplicates to their parent plants.This Study was conducted at the nursery of the College of Agricultural Studies, Sudan University of Science and Technology at Shambat, Sudan, with the objectives of evaluating the impact of using different rooting media (Sand, Silt-loam and Compost) using different cutting lengths (20cm, 30cm and 40cm) treated with different (IBA)concentrations on shoot and root performance of (Jatropha curcas L.) during seasons of 2012 and 2013. Stem cuttings were from three years old of Jatropha curcas plants from Shambat Agricultural Research Center Farm. Cutting bases were dipped in (IBA) solution for one hr. Treated cuttings were planted in rooting media, arranged in RCBD. The studied shoot and root parameters were: number and length of roots/cut, number of leaves/cut, number and lengths of branchesnumber of leaves/cut. Results showed that there were significant differences between length of cuttings, hormone concentrations, and the media on all measured parameters at P?0.05.The 40 cm long cuttings performed highly better for all measured parameters compared to 30 and 20 cm cuttings. Both low (313 mg/L) and high (2500 mg/L) of IBA concentrations were comparable and resulted in significantly high results for the measured parameters compared to zero control. Compost and silt-loam media are almost similar but better than sand media for rooting and establishment of Jatropha cuttings. Based on the above results it is advisable to use 40cm cuttings with low (IBA) concentration (313 mg/L water) in silt-loam rooting media for successful root formation and cuttings performance for mass propagation techniques of Jatropha curcas L. article

Effect of Oestrous Synchronization using PGF2? on Subsequent Fertility

Wed, 01 Jan 2014 00:00:00 GMT

Effect of Oestrous Synchronization using PGF2? on Subsequent Fertility Badawi . Majdi E.; Makawi , Sharaf eldien A.; Abdelghafar , Rehab M.; Ibrahim , Mohamed T This study was conducted to monitor the oestrous response to prostaglandin (PGF2?) treatment and subsequent fertility on days 45, 60 and 90 post-partum (pp). A total number of 30 Nubian goats were equally divided into three groups (n = 10) and given double intramuscular injections of 125? cloprostenol, 11 days apart. Goats detected in oestrus were handmated twice on 1st and 2nd day of oestrus. The conception, fecundity and prolificacy rates were measured 40-60 days after mating using ultrasonography. The accuracy of ultrasonographic detection of pregnancy was 100% for both pregnant and non pregnant females and the results were confirmed at parturition. The results indicated that the conception rate was high on day 60 pp (30%) compared with day 45 (20%) and day 90 (20%) pp. Fecundity rate was 40% on day 60 pp, 30% on day 45 pp and 20% on day 90 pp. Prolificacy rate was 150% on day 45 pp, 133.3% on day 60 and 100% on day 90 pp. The differences in these parameters among the groups were not significant (p < 0.05). It could be concluded that fertility rates in Nubian goats synchronized by PGF2? on days 45, 60 and 90 pp were low and there were no significant difference among the groups. article

Isolation and Identification of Camelpox Virus in Eastern Sudan

Wed, 01 Jan 2014 00:00:00 GMT

Isolation and Identification of Camelpox Virus in Eastern Sudan Abdo el Motalab , Yassein Muzamil; Ahmed , Abdelgadir Ballal In this study, skin biopsies were collected from camel herds in Eastern Sudan showed signs suggestive to camelpox, for histopathology, virus isolation and identification. The affected camels were febrile, depressed, prostrated and anorexic. Also edema of face and head and lesions involved the whole head, neck, buttock, abdomen, chest, legs, ears, udder and tail.Histopathology results of the skin biopsies revealed marked degree of acanthosisand ballooning (hydropic) degeneration and vacuolation of acanthocytes.nBothHyperkeratosis and thedermal layer infiltrated with inflammatory cells, with dermal fibroplasia. Virus isolation succeeds on CAM and Vero cells. The isolates were identified as camel pox by AGPT and VNT and PCR. PCR was considered the rapid and sensitive for the diagnosis of Camelpox. article