eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, H. Botany
2090-3812
2090-3820
2006-12-01
7
1
1
7
10.21608/eajbsh.2006.16818
16818
Original Article
Utilization of Aquatic Plants Extracts as an Alternative to Plant Growth Regulators In Vitro Experiments
Ashwaq Abed
ashwaqbio@yahoo.com
1
Sameer Mahmmoud
2
Eman Ismail
3
Biotechnology Research Center, Al-Nahrain University, Baghdad 10072, Iraq
Biotechnology Research Center, Al-Nahrain University, Baghdad 10072, Iraq
Biotechnology Research Center, Al-Nahrain University, Baghdad 10072, Iraq
In the current study, the levels of endogenous free and conjugated auxin (Indole-3-acetic acid, IAA), gibberellic acid (GA3), and abscisic acid (ABA) were examined in two species of aquatic plants (Ceratophyllum demersum and Egeria densa). The comparison between the content of endogenous phytohormones in aquatic plants showed that C. demersumhad highestlevels of total (IAA, GA3 and ABA) than E. densa. Different concentrations offree phytohormones extracts were prepared (0, 25, 50, and 100µl/l), then added to (MS) culture medium as an alternative to plant growth regulators. Effects of these concentrations on callus productionof black henbane (Hyoscyamusniger) and potato propagation (Solanum tuberosum) were studied in vitro. Freephytohormones extracts with all concentrations encouraged production of callus tissue from leaves explant of black henbane compared with control treatment, also, these extracts promoted propagation of potatoby increasing number of nods and length of shoot.So, its appear that remnants of aquatic plants could be used successfully for agricultural improvement and another application of bioassay.
https://eajbsh.journals.ekb.eg/article_16818_a04300da1a8b367bd4100a13c3341706.pdf
Aquatic plants
Ceratophyllum demersum
Egeria densa
Plant growth regulators
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, H. Botany
2090-3812
2090-3820
2006-12-01
7
1
9
26
10.21608/eajbsh.2006.16819
16819
Original Article
Assessment of Genetic Variations and Growth/Yield Performance of Some Egyptian and Yemeni Wheat Cultivars Under Saline Condition
Nader Abdelsalam
nader.wheat@alexu.edu.eg
1
E. Kandil
essam.kandil@alexu.edu.eg
2
Agricultural Botany Department, Faculty of Agriculture, Saba Basha, Alexandria University
Plant Production Department, Faculty of Agriculture, Saba Basha, Alexandria University
Three different experiments were carried out at the Faculty of Agriculture Saba Basha, Alexandria University during two seasons 2013-2014 and 2014-2015 to appraisal the genetic variations, growth, yield and yield components between ten wheat (Triticuma estivum L.) cultivars from Egypt and Yemen [five Egyptian cultivars namely;Sakha93 (E1), Giza 168 (E2), Gemmeiza 9 (E3), Shakha94 (E4), Egypt1 (E5),and fiveYemeni cultivars namely; Behoth14 (Y1), Sonalica (Y2), Acsadgahran (Y3), Kaaalhakl (Y4) and Local wheat (Y5)]. Egyptian wheats grain was provided by Agronomy Department, Agriculture Research Center, Giza, Egypt while Yemeni wheats grain from Agricultural Researches Extinction authority (The Regional Agricultural Researches for Central Highland, Yemen).All the tested cultivars were evaluated experimentally under different salt conditions i.e. 50, 100 and 150 mMol NaCl in addition to control treatment the following aspects were detected i.e. seedling length (cm), root length (cm), leaves number/seedling, number of roots/seedling and chlorophyll content (mg/m2). At the same time, November 15th, the wheat cultivars were planted in field in randomized complete block design (RCBD) with four replications in both seasons to measure plant height (cm), tillers number/plant, spike lets number/spike, grains number/spike, 1000- grain weight (g), grain yield kg/fed., straw yield kg/fed., biological yield kg/fed., harvest index (HI %) and grain protein %. After 50% of tasseling flowers Yemeni wheat cultivars were used as donor for pollen grains and hybridization was done in one way to calculate the heterosis (H%) for twenty-five hybrids. The obtained results showed high significant variations were observed between the tested cultivars and the highest mean values of heterosis were recorded and it can be suggested that the current wheat cultivars could be used in breeding program in the future.
https://eajbsh.journals.ekb.eg/article_16819_bab5eb8fd55da1e09640c6b44c4e8e1e.pdf
Wheat
Egypt Yemen
cultivars
Heterosis
Growth
yield
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences, H. Botany
2090-3812
2090-3820
2006-12-01
7
1
27
36
10.21608/eajbsh.2006.16820
16820
Original Article
The Role of Antagonism in the Rhizospheric Region for Chaetomium globosum and Trichoderma harzianum against Fusarium spp. Attacking Tomato Plant.
Zienab Wahba
zienab_hssn@yahoo.com
1
Olfat Barakat
2
Refae I.
3
Ramses S.
4
Central Agriculture Pesticides Laboratory, Dokki, Giza, Egypt
Microbiology Department, Faculty of Agriculture, Cairo university Giza, Egypt
Microbiology Department, Faculty of Agriculture, Cairo university Giza, Egypt
Microbiology Department, Faculty of Agriculture, Cairo university Giza, Egypt
Chaetomium globosum and Trichoderma harzianum were isolated from healthy tomato plants at the rhizospheric area. These isolates were evaluated as potential bio-agents in control of the soil-borne fungi, Fusarium solani the causal agent of root rot, Fusarium oxysporum f. sp. lycopersici, Fusarium oxysporum f. sp. radicis-lycopersici and Fusarium semitectum wereisolated from diseased tomato plants in Alexandria and Giza Governorates. The Pathogenicity test on tomato plant was conducted under greenhouse conditions. It indicated that, all tested fungi have a pathogenic effect on tomato plant. After one week the death percentages caused by F. solani, F. oxysporum f. sp. lycopersici, F. oxysporum f. sp. radicis-lycopersici and F. semitectum were 43.8, 31.3, 68.8 and 56.3%, respectively. However, after 45 days, the obtained data percentages for the same fungi were 62.5, 73, 87.5 and 83.8, respectively. The tested bio-agents affected all tested pathogens ,however, C. globosum at zero time of the pathogen inoculation reduced the radial growth of F. oxysporum f. sp. lycopersici, F. oxysporum f. sp. radicis-lycopersici, F. semitectum and F. solani by 53, 24.4, 48.9 and 22.2%, respectively, while C. globosum (3 days before the pathogen inoculation) reduced the radial growth of F. oxysporum f. sp. lycopersici, F. oxysporum f. sp. radicis-lycopersici, F. semitectum and F. solani by 68.9, 48.9, 72.2 and 38.8%, respectively, on the other hand, T. harzianum reduced the radial growth of the same tested pathogens (F. oxysporum f. sp. lycopersici, F. oxysporum f. sp. radicis-lycopersici, F. semitectum and F. solani ) by 66.7, 67.8, 100 and 61.1, respectively.
T. harzianum was the most effective bio-agent against Fusarium spp. Comparing with C. globosum. It had recorded the complete growth reduction When it had been tested on Fusarium semitectum with 100% percentage.
https://eajbsh.journals.ekb.eg/article_16820_226a258c58d73c05cc757d62a033d51c.pdf
Antagonism
Rhizospheric Region
Chaetomium globosum
Trichoderma harzianum
Fusarium spp
tomato plant