Comportamento de progênies F4 obtidas por cruzamentos de 'Icatu' com 'Catimor'

Abstract

RESUMOConduziu-se este trabalho com o objetivo de avaliar progênies de cafeeiro resultantes do cruzamento entre 'Icatu' x 'Catimor', quanto à produtividade e vigor vegetativo e selecionar progênies superiores para avançar no programa de melhoramento dessa população. O delineamento utilizado foi em blocos casualizados com quatro repetições, 30 tratamentos (29 progênies do cruzamento mais a cultivar Rubi MG 1192, utilizada como testemunha). Para análise de variância dos dados adotou-se o esquema de parcela subdividida no tempo. Foram analisados a produção em sacas beneficiadas.ha ABSTRACTThe objective of this research was to evaluate coffee progenies resulted from the crossing of 'Icatu' with 'Catimor' in relation to their production and plant vigor and to select higher quality progenies to advance the breeding program of this population. For this purpose, a randomized complete block design was carried out with four replications and for the analysis of variance, the Split plot temporal arrangement was adopted. Twenty nine progenies plus the Rubi MG 1192 cultivar, used as a control, were evaluated. The yield of beans in bags.ha -1 of six harvests from 2001/2002 to 2006/2007 was evaluated and the plant vigor after the harvest was assessed. The results indicated that the evaluated progenies showed variability mainly for grain yield confirmed by heritability. This condition associated to high bean yields, which reached 62.0 bags.ha -1 and high plant vigor, showed the possibility of selecting outstanding progenies in the studied population.

Agronomic traits of coffee tree progenies from Timor Hybrid x Catuaí crossing

“…Afterwards, conversion of processed coffee.ha -1 (into units of 60kg sacks) was done by value approximation, considering an average yield of 480L of "farm coffee" for each 60kg processed coffee sack (CARVALHO et al, 2009). The percentage of cherry fruit was calculated by counting in a sample of 300mL of fruit per plot.…”

Agronomic performance of arabica coffee genotypes in northwest Rio de Janeiro State

“…The productivity of the 2009/2010 biennium concerning the harvest totals for 2009 and 2010 and the 2011/2012 biennium concerning the harvest totals for 2011 and 2012 were evaluated, totaling 4 harvests, between May and July. The volume of harvested coffee cherries was transformed to benefit bags/ha using the scale of 480 L coffee cherries per 60-kg sack (Carvalho et al, 2009). The 25 genotypes were evaluated using a spacing of 2.5 x 0.8 m with random blocks and 5 plots with 8 plants per plot.…”

MG Travessia: a coffee arabica cultivar productive and responsive to pruning

“…Subsequently, the yield was converted into yield of 60 kg bags of green coffee per hectare (bags ha -1 ). This conversion was carried out by approximating the values, considering mean yield of 480 liters of freshly harvested coffee for each bag of 60 kg processed coffee (Carvalho et al 2009). During analyses, mean yield (bags ha -1 ) per biennium was considered, which was obtained by the mean of two consecutive harvests.…”