A Geometry for Plant Breeding<sup>1</sup>

Grafius, J. E.

doi:10.2135/cropsci1964.0011183x000400030001x

Cited by 60 publications

(39 citation statements)

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“…It is the prime concern of the plant breeder and is the final factor on which selection programs are to be envisaged. All changes in yield must be accompanied by changes in one or more characters (Graffius, 1964).…”

Section: Resultsmentioning

confidence: 99%

Correlations between yield and fruit quality characteristics of fresh market tomatoes

Souza¹,

Melo

Lüders³

et al. 2012

Hortic. Bras.

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Genotypic, phenotypic and environmental correlations were estimated for all possible pairs among eleven characters of tomatoes. Fifteen treatments including five parents and ten hybrids of Instituto Agronômico (IAC) tomato breeding program were evaluated using a randomized complete block experimental design, with tree replications in Itatiba, São Paulo state, Brazil, during 2005/2006. The following traits were evaluated: fruit yield per plant (FP), fruit number per plant (FN), average fruit weight (FW), cluster number per plant (CN), fruit number per cluster (FC), number of locules per fruit (NL), fruit length (FL), fruit width (WI), fruit wall thickness (FT), total soluble solids (SS), and total titratable acidity (TA). The genotypic (rG), phenotypic (rF) and environmental correlations (rA) for two pairs of plant traits were estimated using the Genes© program. High similarity was found among the estimates of genotypic and phenotypic correlations. Positive and high phenotypic and genotypic correlations were observed between FP and the traits FN, FW and FT, and these associations contributed for yield increasing. FW and FT contributed to yield increase and should be considered together as primary yield components in tomato. Positive values of the genotypic and phenotypic correlations revealed that FP influenced FN with high direct effect and significant positive correlation. These traits may be included as the main selection criteria for tomato yield improvement.

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Section: Resultsmentioning

confidence: 99%

Correlations between yield and fruit quality characteristics of fresh market tomatoes

Souza¹,

Melo

Lüders³

et al. 2012

Hortic. Bras.

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“…Negative correlation of yield/plant both genotypically and phenotypically were measured with terminal leaflet length, terminal leaflet breadth, days to first flowering, inter node length and number of nodes/plant. In general, the association of the characters could be explained in a way that total fluctuation in yield are governed mainly by changing in one or more components ; though all fluctuation in the components as in each of cases were not expressed in yield due to decisive ratings of desirable and undesirable associations of the components with yield/plant (Graffius, 1964). Moreover, the knowledge of nature and magnitude of association between yield and its components is necessary for effective selection in advance generation.…”

Section: Correlation Coefficients Analysismentioning

confidence: 99%

Character association and path coefficient analysis for identification of yield enhancing characters in snake gourd (Trichosanthes anguina L.)

Islam

Hasan

Bashar

et al. 2016

Jahangirnagar Univ. J. Biol. Sci.

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Correlations and path coefficient were studied in seven snake gourd genotypes namely Turag, Surma, Vorosa, Manghosito, Jhumlong, Green nitch and Monosha for yield and eleven yield contributing characters. The correlation coefficients were determined to find out the interrelationship among the characters studied. The correlation studies revealed that, yield/plant had positive and highly significant correlation both in phenotypic and genotypic level with fresh weight/fruit, fruit girth, fruits/plant, plant height and fruit length which indicated that yield could be increased by selecting these characters. Direct and indirect effects were measured using path coefficient analysis in order to obtain mechanisms of interrelationship between yield/plant and its components. The highest positive direct effect (0.9763) on yield/plant was found in fresh weight/fruit followed by fruits/plant (0.4179) and fruit length (0.2665). The characters showed direct positive effect on yield/plant indicated that direct selection for these traits might be effective for improving yield through selection in snake gourd.

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“…(Table 5). Following the reasoning of Adams (1967) and Grafius (1964) A similar interaction was observed by Faris and Guitard (1969) The expression of high kernel weight has been observed to increase with increasing latitude across Canada and Alaska (Guitard et al' 1965). Our data suggest that the higher kernel weight of temperate-adapted cultivars can be Can.…”

mentioning

confidence: 63%

Yield and yield component response of barley in subarctic and temperate environments

Dofing¹,

Knight²,

Berke³

et al. 1992

Can. J. Plant Sci.

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A Geometry for Plant Breeding¹

Cited by 60 publications

References 0 publications

Correlations between yield and fruit quality characteristics of fresh market tomatoes

Correlations between yield and fruit quality characteristics of fresh market tomatoes

Character association and path coefficient analysis for identification of yield enhancing characters in snake gourd (Trichosanthes anguina L.)

Yield and yield component response of barley in subarctic and temperate environments

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A Geometry for Plant Breeding1

Cited by 60 publications

References 0 publications

Correlations between yield and fruit quality characteristics of fresh market tomatoes

Correlations between yield and fruit quality characteristics of fresh market tomatoes

Character association and path coefficient analysis for identification of yield enhancing characters in snake gourd (Trichosanthes anguina L.)

Yield and yield component response of barley in subarctic and temperate environments

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A Geometry for Plant Breeding¹