Aveskamp MM

Crosbie TM

Cruz CD

Dianese AC

Granate MJ

Hazel LN

Ide CD

Liberato JR

Marin SLD

Mulamba NN

Paula RC

Pesek J

Rezende JAM

Santos FS

Santos PHD

Smith HF

Suzuki MS

Terra CEPS

Vilarinho AA

Vivas M

Williams JS

Revista Ceres

In order to select superior hybrids for the concentration of favorable alleles for resistance to papaya black spot, powdery mildew and phoma spot, 67 hybrids were evaluated in two seasons, in 2007, in a randomized block design with two replications. Genetic gains were estimated from the selection indices of Smith &amp; Hazel, Pesek &amp; Baker, Williams, Mulamba &amp; Mock, with selection intensity of 22.39%, corresponding to 15 hybrids. The index of Mulamba &amp; Mock showed gains more suitable for the five traits assessed when it was used the criterion of economic weight tentatively assigned. Together, severity of black spot on leaves and on fruits, characteristics considered most relevant to the selection of resistant materials, expressed percentage gain of -44.15%. In addition, there were gains for other characteristics, with negative predicted selective percentage gain. The results showed that the index of Mulamba &amp; Mock is the most efficient procedure for simultaneous selection of papaya hybrid resistant to black spot, powdery mildew and phoma spot.</jats:p

Marcelo Vivas

Silvaldo Felipe da Silveira

Messias Gonzaga Pereira

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Revista CERES

Prediction of genetic gain from selection indices for disease resistance in papaya hybrids

http://www.scielo.br/pdf/rceres/v59n6/07.pdf

Prediction of genetic gain from selection indices for disease resistance in papaya hybrids

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