ORIGINAL_ARTICLE
Effect of Water Stress on Growth and Physiology of Tomato (Lycopersicon esculentum Mill.)
The effects of drought on physiology of Tomato (Lycopersicon esculentum Mill.) cv., Farida grown in potswere studied. Drought stress was done by irrigating the plants with 80, 60 and 40% of water needed to reach soil potcapacity. Nutrients concentrations of the studied tomatoes grown in pots under different irrigation treatments variedaccording to water stress levels. The effect of water stress treatments on total chlorophyll, chlorophyll a, chlorophyll band carotenoids resulted in significant increase with treatment 80% water deficit, then significant decrease inaccumulation of pigments in response to water stress under 40 and 60% water deficit. All water stress treatments hadhighly significant effect on increasing accumulation of proline content. Drought stress induced different changes in theanti-oxidative enzyme activities, whereas, Ascorpate peroxidase and Catalase increased significantly with water stressfrom 0.58 and 140.7 Ug−1 FW in control to 4.08 and 414.9 Ug−1 FW in T4, respectively. In contrary, superoxidedismutase decreased significantly with water stress from 42.36 in T1, to 31.32, 33.54 and 31.51 in T2, T3 and T4,respectively. The results indicate that irrigation treatment with 80% of pot capacity (T2) was more effective than T3 andT4 from the viewpoint of more efficient water use, which would help to minimize drought damage and keep healthyplants in the same time saving irrigation water by 20%.
https://hjsc.journals.ekb.eg/article_6465_451fcd697764f2699b5385bbcb204052.pdf
2015-01-01
1
5
10.21608/hjsc.2015.6465
Tomato
Water stress
Nutrients
Antioxidant enzymes
Pigments
proline
Ibrahim
Almohisen
1
Department of Biology, Faculty of Science and Humanities, Quwayiyah, Shaqra University, P.O. Box 33, Shaqra, 11961, Kingdom of Saudi Arabia
AUTHOR
ORIGINAL_ARTICLE
Plant Growth, Yield, Macro and Micro-Nutrients Uptake of Fennel (Foeniculum vulgare Mill.) Positively Affected by N-Sources and Rates as well as Foliar Application of Micronutrients
This study was carried out in order to give some information that could improve fennel nutritional status andproductivity. We studied the effect of two N fertilizers [ammonium nitrate (AN) and ammonium sulphate (AS)], twonitrogen rates (60 and 90 kg N/fad.) and two levels of micronutrients (without and with FeEDTA, MnEDTA andZnEDTA) on growth, yield and nutrient (N, P, K, Fe, Mn and Zn) uptake on fennel plants cv. Florence. The resultsindicated that, ammonium sulphate at level of 90 kg/fad. enhanced plant growth, production of dry matter and improvedyield (foliage, bulb and total). Nutritional status of fennel plants was improved, whereas the ammonium sulphate atlevel of 90 kg/fad. and spraying of the micronutrient mixture increased the uptake of macronutrients (N, P and K) andmicronutrients (Fe, Mn and Zn). The present study suggests that foliar application of micronutrients could be aneffective strategy in bio-fortifying fennel plants with Fe, Mn and Zn to produce foliage and bulb yield with highnutritional quality.
https://hjsc.journals.ekb.eg/article_6468_2d224d64def9a5be4249dade3dfb3814.pdf
2015-01-01
7
16
10.21608/hjsc.2015.6468
Fennel
nitrogen fertilizer
yield
essential elements
El-Seifi
K.
1
Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
AUTHOR
M.
Hassan
2
Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
AUTHOR
M.
Elwan
3
Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
AUTHOR
O.
Haggag
4
Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt
AUTHOR
ORIGINAL_ARTICLE
In Vitro Micro-propagation of Cordyline and Dieffenbachia Plants
This study was carried out in Plant Tissue Culture Laboratory of the Faculty of Environmental AgriculturalSciences, El-Arish, North Sinai, Suez Canal University, Egypt during the period from April 2013 to March 2015. Theobjective of this study was to optimize the micro-propagation protocol for Cordyline terminals and Diffenbachia pictacv. "Tropica" in order to make the in vitro propagation feasible and economical by enhancing the slow rate ofmultiplication of traditional methods. Results indicated that BA at 1.0 mg/l-1 combined with 0.1 mg/l-¹ NAA surpassedall other cytokinins (Kin and 2ip) with significant increase on number of axillary shoots/explant, axillary shoot length,number of leaves/shoot. During establishment stage, Main shoot length (2.55, 3.90 cm, 7.33 and 7.04 cm, respectively)on cordyline and (2.33, 4.19 cm, 9.40 and 6.33 cm, respectively) on dieffenbachia. However, in multiplication stage,data revealed that increasing BA concentrations significantly increased growth of cordyline and dieffenbachia comparedwith control. Data showed that addition of 2 mg/l-1 BA combined with NAA at 0.1 mg/l-1 recorded the highest values ofnumber of axillary shoots/explant, axillary shoot length, number of leaves/shoot and main shoot length (2.86, 5.55 cm,9.40 and 8.77 cm, respectively) on cordyline, while values were 2.66, 5.66 cm, 9.88 and 8.66 cm, respectively ondieffenbachia. The combination between licorice extract and sucrose significantly increased growth parameters ofcordyline. The highest values of number of axillary shoots/explant, axillary shoot length, number of leaves/shoot andmain shoot length (2.30, 3.25, 6.15 and 4.20, respectively) were recorded with on cordyline belongs MS medium + 30g/l-1 sucrose and licorice at 40 mg/l-1, combined with (BA) at 2 mg/l-1 and 0.1 mg/l-¹ NAA. On the other side, number ofaxillary shoots/explant of dieffenbachia was not affected by the medium supplementation with the mentioned factors.For rooting stage, results revealed that NAA was the best auxin in roots induction of cordyline and dieffenbachia withhigh significant increase in root length and number of roots. While, there was no difference among NAA, IBA and IAAin rooting percentage. Moreover, NAA at 1.0 mgl-1 recorded the highest values of number of roots and root length(10.00 and 21.33 cm, respectively) on cordalyine and (8.00 and 8.53 cm, respectively) on dieffenbachia. Rootedplantlets were ex vitro acclimatized (95% survival) of cordyline and dieffenbachia when they were cultured in (1:1:1:1,v/v/v/v) peat moss, perlite, vermiculite and sand before transferred to soil.
https://hjsc.journals.ekb.eg/article_6469_3af544842e83ffb2ec4ef47f574eaeb1.pdf
2015-01-01
17
24
10.21608/hjsc.2015.6469
Cordyline terminals
Diffenbachia picta cv. "Tropica"
BA
licorice
sucrose%
and NAA
Hassan
S.
1
Department of Plant Production, Fac. Env. Agric. Sci., El-Arish, Suez Canal Univ., Egypt
AUTHOR
S.
Abdallah
2
Department of Plant Production, Fac. Env. Agric. Sci., El-Arish, Suez Canal Univ., Egypt
AUTHOR
ORIGINAL_ARTICLE
Micropropagation of Four Coffee Cultivars (Coffea arabica L.) from Yemen through Shoot Tip Culture
The aim of this study is to optimize in vitro multiplication of Coffea arabica cvs 'Benan',' Burai',' Odayni'and 'Odayni- Bayat'. Seeds germinated on modified quarter MS medium with 1.0 g l−1 activated charcoal gave thehighest germination percentage of the four cultivars under study. BA at 8.0 mgl-1 was the most effective concentrationwith an average of 14 shoots per explant, resulting in better and morphologically superior microshoots in 'Benan' cv.However 'Burai' ,'Odayni' and 'Odayni- Bayat' cultivars, showed the highest number of shoots when they were grownon MS medium supplemented with BA at 4.0, 2.0 and 6.0 mgl-1 respectively. Root formation was 100% in response tothe application of IAA, IBA and /or NAA to the culture media for the four cultivars. Half MS supplemented with NAAat 2.0, 1.0 and 3.0 mgl-1 was found to be a suitable medium for root induction in excised micro-shoots, of 'Odayni','Burai' and 'Odayni-Bayat' cultivars, respectively. The plantlets were successfully acclimatized in the greenhouse;consequently the survived plants reached 100%.
https://hjsc.journals.ekb.eg/article_6472_6b843ea94e6e0717465d5e201043f8fb.pdf
2015-01-01
25
31
10.21608/hjsc.2015.6472
in Vitro
benzyladenine
Coffea arabica. 'Benan'
'Burai'
'Odayni' and Odayni-Bayat
micropropagation
Ameen
AL-Azab
1
Horticulture Dept., Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt
AUTHOR
Sanad
Habib
2
Horticulture Dept., Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt
AUTHOR
Mohammed
Hussein
3
Botany Dept., Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt.
AUTHOR
Fadia
El-Sherif
4
Horticulture Dept., Faculty of Agriculture, Suez Canal University, 41522, Ismailia, Egypt
AUTHOR