scholarly journals Pedigree selection for number of bolls/plant in two segregation populations of Egyptian cotton (Gossypium barbadense L.)

2021 ◽  
Vol 3 (3) ◽  
pp. 166-166
Author(s):  
M.A. Ali ◽  
M.S. Hassan ◽  
A.A. Mohamed ◽  
A.A. Abbas
Keyword(s):  
Gossypium Barbadense ◽  
Pedigree Selection ◽  
Selection For ◽  
Egyptian Cotton

Effect of foliar application of chelated copper and manganese on yield components and fibre properties of Egyptian cotton (Gossypium barbadense)

1993 ◽  
Vol 121 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Z. M. Sawan ◽  
M. H. Mahmoud ◽  
B. R. Gregg
Keyword(s):  
Yield Components ◽  
Agricultural Research ◽  
Foliar Application ◽  
Field Studies ◽  
Gossypium Barbadense ◽  
Research Centre ◽  
Fibre Properties ◽  
Foliar Sprays ◽  
Egyptian Cotton ◽  
Cotton Cultivar

SUMMARYA decline in supplies of organic manures and the increased use of chemical fertilizers has led to a decrease in the micronutrient content of the soil, with attendant effects on yield.Field studies were conducted in 1986 and 1987 at the Giza Agricultural Research Centre, Egypt, to determine the effect of Cu-EDTA and Mn-EDTA foliar sprays on growth, mineral content, yield components and fibre properties of the Egyptian cotton cultivar Giza 75 (Gossypium barbadense L.).All combinations used significantly increased the uptake of Cu and Mn and the dry matter yield. The earliness of harvest and the value of yield components were all increased by the application of Cu or Mn; 25 mg/1 of both Cu and Mn gave the highest values. Lint percentage and fibre properties were not significantly affected.This study indicated that the yield of cotton, grown under otherwise standard conditions, may be increased by foliar sprays of Cu-EDTA and Mn-EDTA combined.

Effect of Direction and Distance on Cross Pollination in Egyptian Cotton (Gossypium barbadense L.)

1972 ◽  
Vol 8 (1) ◽  
pp. 67-71 ◽  
Author(s):  
Hassan E. Galal ◽  
H. A. Abou-El-Fittouh ◽  
Gadd Morshed
Keyword(s):  
Linear Relation ◽  
Gossypium Barbadense ◽  
Cotton Breeding ◽  
Cross Pollination ◽  
Breeding Methodology ◽  
Egyptian Cotton ◽  
Cross Fertilization

SUMMARYThe effect on cross pollination of four directions and six distances from the marker variety in Egyptian cotton was investigated. The percentage of cross pollination did not differ appreciably in the different directions but there were significant differences in cross fertilization among the six distances. A linear relation was observed between cross pollination per cent and distance up to 8.8 m. from the marker variety. Implications of these findings on various aspects of cotton breeding methodology are discussed.

Natural cross pollination in Egyptian cotton (Gossypium barbadense L.)

1976 ◽  
Vol 86 (1) ◽  
pp. 205-209 ◽  
Author(s):  
M. A. Elfawal ◽  
M. A. Bishr ◽  
E. K. Hassoub
Keyword(s):  
Gossypium Barbadense ◽  
Cotton Variety ◽  
Cross Pollination ◽  
Growing Seasons ◽  
Natural Crossing ◽  
Egyptian Cotton ◽  
Natural Cross

SUMMARYThe percentage of natural cross pollination was estimated in the Alexandria area (Egypt) in two sites near and far from an apiary. The Egyptian cotton variety Giza 45 and the glandless strain Bahtim 110, as a marker parent, were used during three growing seasons. The average natural crossing within the square of the marker parent were 3·54 and 0·34% near and far from the apiary respectively. For the plants around the square of pollen source, however, the average of natural crossing was 0·56% near the apiary, while it was 0·21% far from the apiary. The natural crossing steadily decreased as the distance from the marker variety increased.

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