Improving Egyptian cotton (Gossypium Barbadense) using double crosses [electronic resource]:
Language: English Summary language: Arabic Publication details: 2023Description: p. 13-29Other title:- تحسين القطن المصرى بإستخدام الهجن الزوجية [Added title page title]
- Egyptian journal of agronomy, 2023 v. 45 (1) [electronic resource].
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Main | ART EJA V45 No1 2 (Browse shelf(Opens below)) | Available |
Includes references.
GENETIC materials used in the present investigation included five cotton varieties belong
to (Gossypium barbadense, L.). Three of these varieties were long staple, BBB (big black
boll) (P1), Australian (P2) and G97 (P3) while the other two varieties were extra-long staple, Giza
92 (P4) and G96 (P5 ). Hybrids produced from these parents and the parents were evaluated in
Sakha Agricultural Research Station, Kafr Al Sheikh Governorate, Egypt. Studied traits were; boll
weight, number of bolls/plant, lint percentage, seed cotton yield, lint cotton yield, first fruiting
node, days to first flower appearance, duration of the boll maturation, upper half mean (U.H.M),
fiber strength and Micronaire value. Difference between single crosses and double crosses (DC)
was highly significant for most studied traits. GCA mean squares in all studied traits were
significant for F1 except for days to first flower and fiber fineness (micronaire reading). GCA
mean squares were significant for DC except for lint%, fiber length and days to first flower. A
very important issue of double-cross hybrids is the arrangement of parents, i.e., order effect, in
the hybrids.
Keywords: Combing ability, Double crosses, Heritability, Gossypium barbadense, Order effect, Single crosses
Summary in Arabic
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