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Effects of reduced plant height on breeding requirements and ...

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significant negative correlati<strong>on</strong> with the yield comp<strong>on</strong>ent,<br />

kernel weight, in agreement wi-th yield comp<strong>on</strong>ent compensati<strong>on</strong><br />

ani distríbuti<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> photosynthate theories (Adams, l)61), as<br />

well âs being in agr:eernent with reports by Grafius anC<br />

Okoli (19?4) ånd Rasmuss<strong>on</strong> <strong>and</strong> Cannell (19?0). .{ significant<br />

negative associati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> kernels per. spÍke with percent<br />

plunpness was also shown in the present study" Test welght<br />

was negatively associated with kerneLs per spike in<br />

populati-<strong>on</strong> C-70-2 ¡ however, the pooled. correlati<strong>on</strong> over<br />

populati<strong>on</strong>s was not significant "<br />

Kernels per spike showed no relati<strong>on</strong>shÌp to days tô<br />

heading, whíie there were positíve associati<strong>on</strong>s bei;ween<br />

kernels per spike <strong>and</strong> Cays to maturity <strong>and</strong> days in postanthesis"<br />

Phese correlati<strong>on</strong>s were not significa;rt <strong>on</strong> an<br />

individual populati<strong>on</strong> basis except for kernels per spike<br />

<strong>and</strong> days in post-anthesis in populati<strong>on</strong> C-?0-1.<br />

Kernels per spike was positively related to the degree<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g> lodging in the present study <strong>and</strong> generally negatively<br />

associated with the quality parãrûeters measured, although<br />

the relati<strong>on</strong>ship with the level <str<strong>on</strong>g>of</str<strong>on</strong>g> alpha-aroylase was not<br />

significant.<br />

As reported by Crook <strong>and</strong> poehlrnan (19?1), this study<br />

revealed a significant positive associati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> kernel weight<br />

with percent plurnpness, <strong>and</strong> as reported. by llsi <strong>and</strong> l,ambert<br />

(f954), there was a significant positive correlati<strong>on</strong><br />

between kernel we ight <strong>and</strong> test weight" Kerne 1 weight was<br />

negatively reLated to days io heading <strong>and</strong> positively rela.ted<br />

73

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