قوة الهجين في القطن بتأثير فترتي الري

Abstract EN

A fiielld experiiment was carriied out duriing 2010-2012 at the experiimentall fiielld of Crop Sciience Dept..

– Collllege of Agriicullture – Abu-Graiib..

Thiis was to evalluate genotypes under water stress condiitiions and attempt to breediing of hybriids for tollerant of thiis stresses,, wiith hiigher yiielld capaciity..

However estiimate of heterosiis..

Fiive variietiies of cotton iinclluded Cocker-310,, Diise,, Macneer,, Marsoomii-5 and Rabeaa-122 were crossed,, duriing the season of 2010 usiing hallf diialllliill..

The traiits for 10 siinglle crosses and 5 parents were tested duriing 2012 usiing RCBD desiign under splliit pllot arrangement wiith three replliicatiions,, iirriigatiion treatments occupiied maiin pllot iinclluded iirriigatiion weeklly and at two weeks and subpllot..The Resullts showed that iirriigatiion at two weeks produced hiighest seed cotton yiielld (104..36 g..pllant-1),, lliint yiielld (21..64g..pllant-1) and no..

of open bolllls (43..2)..

Siigniifiicant diifferences were found among genotypes for allll characteriistiics studiied..

The parent Macneer were attaiined hiighest seed cotton yiielld account 102..02 g..pllant-1,, allso,, crosses (Diise x Macneer) and (Cocker-310 x Rabeaa-122) were gave hiigher seed cotton yiielld (111..75 and 110..21 g..pllant-1 respectiivelly) attriibute to hiigher contriibute of bollll weiight and no..

of open bollll per pllant..

However,, Cross(Cocker-310 x Rabeaa-122) showed hiigh hybriid viigor of seed cotton yiielld (22..06%) and bollll weiight (52..10%) under iirriigatiion at two weeks..

It coulld be concllude to dependent on iirriigatiion at two weeks that attaiined hiigher vallues seed cotton yiielld,, lliint yiielld,, bollll weiight and no..

of open balllls..

Allso can be grown Marsoomii-5 variiety that showed hiigher performance of seed cotton yiielld and lliint yiielld under water stress condiitiions..

Crosses (Marsoomii-5 x Rabeaa- 122) and (Cocker-310 x Rabeaa-122) gave hiigher vallues of seed cotton yiielld and no..

of open balllls at the water stress condiitiions..