000			02952cab a2200301Ia 45 0
001			u182053
003			SIRSI
008			100602s2007 ua ss b eng d
040			_aEAL
041			_aeng _bara
090			_aART AAS V52 No2 2
100	1		_aHamam, K.A.
240	1	0	_aAnnals of agricultural science, 2007 v. 52 (2) _h[electronic resource].
245	1	0	_aEvaluation of spring barley genotypes tolerance to drought stress and aphid infestetion _h[electronic resource].
246	1	5	_aتقييم التراكيب الوراثية للشعير الربيعي لتحمل الجفاف والاصابة بالمن.
300			_ap.327-340
504			_aIncludes reference.
520			_aThirty four barley genotypes plus two local barley (check) were tested for resistance to drought stress and corn leaf aphid, Rhopalosiphum maidis (Fitch.) infestation under field conduction at Sohag governorate during 2004/2005 and 2005/2006 seasons. Results show that, the irrigation intervals significantly affect the population densities of Rhopalosiphum maidis and the prolonged of interval of irrigation to four week caused a significant decline in aphid population. The results obtained reveled that the corn leaf aphid, Rhopalosiphum maidis (Fitch.) appeared from January then increased gradually to reac:l its maximum level of abundance during last week of March during both seasons. The genotypes were different in their sensitivity to the infestation with Rhopalosiphum maidis and it divided to four groups, the first one was highly resistance, includes (1,3, 4, 21, 23, 34 and Giza 128) and the second group was moderately resistance includes (33 and Giza 127), and the third group was susceptible includes (2, 5 and 6), and the fourth group was highly susceptible includes the remaining barley genotypes. TIle genotypes (1, 3, 4, 21, 23, 33 34, Giza 127 and Giza 128) achieved high yield under normal and regime irrigation with potentiality high resistance to drought stress. The genotypes (4, 7, 13, 15. and 29) give the highest No. of kernels/spike. Genotypes (13, 14, 20, 22 and Giza 128) give the highest number spikes/plant. The highest 1000 kernel weight was obtained by genotypes (3,8,26,30 and Giza 128). Yield was negative and strong correlation with, number of aphid (-0.87** and -0.84**) under normal and drought stress. The correlation between nonnal irrigation and aphid densities during two seasons was strong and negative (-0.868**). Strong negative correlation (-0.854**), between drought stress and the aphid densities were detected.
546			_aSummary in Arabic.
650		0	_aBarley _xDrought tolerance
650		0	_aBarley _xDiseases and pests.
650		0	_aBarley _xGenetics.
650		0	_aAphids.
700	1		_aSalman, A.M.A.
773	0		_tAnnals of Agricultural Science. _g2007.v.52(2) _x0570-1783 _7nnas _wu157971
856	4	0	_uhttp://nile.enal.sci.eg/EALE/2007/AAS/5207/2/327.pdf _zFull Text Article.
596			_a1
942			_cAR _2lcc
999			_c38123 _d38123