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	<front>
		<journal-meta>
			<journal-id journal-id-type="publisher-id">pnut</journal-id>
			<journal-id journal-id-type="allenpress-id">pnut</journal-id>
			<journal-title>Peanut Science</journal-title>
			<issn pub-type="ppub">0095-3679</issn>
			<issn pub-type="active">0095-3679</issn>
			<publisher>
				<publisher-name>American Peanut Research and Education Society</publisher-name>
			</publisher>
		</journal-meta>
		<article-meta>
			<article-id pub-id-type="doi">10.3146/i0095-3679-14-1-12</article-id>
			<article-categories>
				<subj-group subj-group-type="heading">
					<subject>Articles</subject>
				</subj-group>
			</article-categories>
			<title-group>
				<article-title>Heritabilities and Correlations for Pod Yield and Leafspot Resistance in Peanut <italic>(Arachis hypogaea</italic> L.): Implications for Early Generation Selection<xref ref-type="fn" rid="fn1"><sup>1</sup></xref></article-title>
			</title-group>
			<contrib-group>
				<contrib contrib-type="author" xlink:type="simple">
					<name name-style="western">
						<given-names>R. N.</given-names><x xml:space="preserve"> </x>
						<surname>Iroume</surname>
					</name><x xml:space="preserve"> and </x>
				</contrib>
				<contrib contrib-type="author" xlink:type="simple">
					<name name-style="western">
						<given-names>D. A.</given-names><x xml:space="preserve"> </x>
						<surname>Knauft</surname>
					</name>
					<xref ref-type="aff" rid="aff2"><sup>2</sup></xref>
				</contrib>
				
					<aff id="aff2">
					<label><sup>2</sup></label>Former graduate student (now Lecturer, University Centre at Dschang, Cameroon) and Associate Professor, Dept. of Agronomy, Univ. of Florida, Gainesville, 32611, respectively
				</aff>
			</contrib-group>
			<author-notes>
				<fn fn-type="fn" id="fn1">
					<p><sup>1</sup>Contribution from the University of Florida, Institute of Food and Agricultural Sciences. Journal Series. No. 7678.</p>
				</fn>
			</author-notes>
			<pub-date pub-type="ppub">
				<month>1</month>
				<year>1987</year>
			</pub-date>
			<volume>14</volume>
			<issue>1</issue>
			<fpage>46</fpage>
			<lpage>50</lpage>
			<history>
				<date date-type="accepted">
					<day>26</day>
					<month>6</month>
					<year>1987</year>
				</date>
			</history>
			<permissions>
				<copyright-statement>American Peanut Research and Education Society</copyright-statement>
				<copyright-year>1987</copyright-year>
				<copyright-holder>American Peanut Research and Education Society</copyright-holder>
			</permissions>
			<related-article related-article-type="pdf" xlink:href="i0095-3679-14-1-12.pdf" xlink:type="simple"></related-article>
			<abstract>
				<title>Abstract</title>
				<p>The purpose of this study was to investigate early generation selection methods for the identification of peanut <italic>(Arachis hypogaea</italic> L.) crosses with combined high yield and disease resistance. Eleven crosses were chosen in the S<sub>1</sub> on the basis of yield and disease reaction. The S<sub>2</sub> was evaluated under natural disease infection for pod yield and leafspot resistance, causal organisms <italic>Cercospora arachidicola</italic> Hori and <italic>Cercosporidium personatum</italic> (Berk. and Curt.) Deighton. Resistance was measured by leaf necrotic area and defoliation. Narrow sense heritabilities for all the traits were estimated by sib analysis and regression of S<sub>2</sub> plant performance on S<sub>1</sub> plant performance. Genetic correlations among traits and the relative efficiency of indirect selection for all the traits were also computed. The results suggest that selection among crosses for all the traits would be advantageous in the S<sub>1</sub> (h<sup>2</sup><sub>f</sub> = 67 to 79&percnt;) as compared to individual plant selection (h<sub>2</sub> = 16 to 26&percnt;) or within family selection (h<sup>2</sup><sub>w</sub> = 3 to 5&percnt;). Selection of genotypes within crosses would be the poorest strategy in early generations. Negative genetic correlations were noted between yield and leafspot severity. The expected progress in increasing resistance of peanut genotypes through selection for yield (30 to 40&percnt; of the response from direct selection for resistance) indicated that selection for yield under disease pressure may be advantageous for developing high yielding, leafspot tolerant genotypes.</p>
			</abstract>
			<kwd-group>
				<title>Key Words</title>
				<kwd>Leafspot resistance</kwd><x xml:space="preserve">; </x><x xml:space="preserve">, </x>
				<kwd>yield</kwd><x xml:space="preserve">; </x><x xml:space="preserve">, </x>
				<kwd>early generation selection</kwd><x xml:space="preserve">; </x><x xml:space="preserve">, </x>
				<kwd>breeding</kwd>
			</kwd-group>
			<counts>
				<page-count count="5"></page-count>
			</counts>
		</article-meta>
	</front>
</article>
