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va!1€t1€a lnd @lcul.teil th.t oil content o! .eeil ra.
@ntlolloil by g.n63 rltl sdditlve and non-addltiv.
cffocts tith non-.dditivo qarect€ plealoDlnatlng. CsE.t
coiblntng tblllty !o! concent!.tion o! olr lD tbe aae.:l
eas hiErr€t lD vtR 5a?2 ald 5 4?27,
I\tan (1932) anary6ed th€ parelB .Dd ll,a in
a r a dI!116I for 19 aqiondlc chalactds by ualnE th.
rathods of G!1!ftnq (1956) and of Jlnta (1954, 1955 .nd
1956) .nd XayDan (1954 a .nd b). Both additlv€ and
dobj,nance coupolent6 ol genetlc v.tlancs v6!e .iglllicant
lor lost or th. traits. The !od€! b.lng hlgher than tr16
tat6r for perceDtag€ of !iv. lodleil tPUa, lint
pefcentlge, fible lergtn. fib!6 Bt!.ngrth. Dtullty d.te,
d.t€ of fi!6t ltoeering. Ee€d Ind6x and nbbst ot seed
pe! bo116, herit.bilitl€s *er. lIEo blEh fo! tne6.
Abo-E1-rshab (1943) tabul,.teal alat. on h€t€losl.
lnd codblning abUlty lor earlln€$, llnt yjold Per
phrt, bo11 ,slght, ltnt pelcentag€, lint lnil€x and 6e€d
lDdex in a di.rr61 c!os6 o! 10 culttvals ana r€polted
that additlve €!!6ct5 ve!6 Pr.doui!.Dt for rlnt yl.Id.
lint percentag., Ilnt inalex, 6.€d Intlax, non-additlv.
.lf.ctg u€!. plodollnlnt lor boll u.19ht.