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258<br />

|{ith the gen6tlc coeflici6ht ol valiatj,oh<br />

.1on6, lt 1s dllticurt to asc€rtain anount o! rlglltnble<br />

vlliatlon p!e€e.t. Th€ haritable vartation clD b€ loulal<br />

sltn th€ h€lp ot h€ritab1l1ty couFf€d rj,th €xpectad<br />

genetlc adv!nc6. The broad aen6€ h€!1t.billty<br />

co€fflcl4ts (h: B,s.) rele hi9h6r fo! au th6 rralts<br />

und€! 6tudy and 6xcep! flbre finaD6E all e6!e<br />

Ettnlftcant. novsver, hlgb h€litablrity fo! nu!b* of<br />

bolls p€r plantr yl€ld o! se6d cotton per plantr llht<br />

index and boll reisht vas associated rlth hlgh Een.tlc<br />

advanc€ iDdlcatlnq that addltiva 96ne e!!ec!a r.!e<br />

lDpoltant 1n itet.!!inat1o. of theso trait6. H19h<br />

heritability fo! seed irdax and oil pelcontag. asEociarBd<br />

rlth Dod6!at6 gon€tlc advah@ 6hor€d tb€ lipoftrn@ o!<br />

botb .ililitlve anil noD-aakUtlvg (doli,nant and eP1.taE16)<br />

g.netlc etlectB. Hovever, fo! llnt p.rcentage. flb!6<br />

finen€86, Etlqgth and Et.pls lengtb, hlgh b6lttabt11ty<br />

rar coupled ritb loe qenstic advance, Indicatlng tbe<br />

j,Dlluenca of.tobinant anil 6pl6tat1c aaneB fo! th66.<br />

paleet€is. Non-.dtlltive (itorlnanco and ep16ta61s) 9en6<br />

elfect5 for abov€ traits rlght had !€sult€d fn the<br />

blasneaE o! the e€tibate6 o! broad 6enss heritabuity.<br />

The s.!1is! EcleDlists 11k6 r:athaPatl g! tl.<br />

(1973) and sinqb (1932) coDput6d higb genotttrlc and<br />

ph.notyplc coefflcl6nts ol vall.bi1lty for y1.Id ol eead

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