For the LSL genotype, the immature and the mature fruits were not

For the LSL genotype, the immature and the mature fruits were not well separated on PC1 or PC2, and the effect of maturity at harvest for the LSL fruits was shown to be small compared to that for the MSL fruits.

The distribution of the variables is shown in Fig. 1B. The majority of acetates (a02, a04-a13), non-acetate esters (b03, b05, b07, b08, b11-b14, b16, b18), diacetates (g02-g05, g08, g09), sulphur-containing compounds (c02, c05-c08 and h01-h05), several alcohols (d02-d05, d07, i01, i02, i07) and a few other compounds were positively correlated with the first axis. Methyl esters, including methyl acetate (a01), methyl propanoate (b01), methyl 2-methylpropanoate (b02), methyl butanoate (b04), methyl 2-methylbutanoate (b06), methyl pentanoate GSK1210151A cell line (b09) and methyl hexanote (b17), as well as S-methyl 2-methylbutanethioate (c03), (Z)-6-nonenal (e06) and 2,6-nonadienal (i03), were positively correlated with the second axis. Mature MSL fruit, positively correlated with the first axis, was characterised by greater numbers of esters (including acetates, diacetates and non-acetate esters), sulphur-containing compounds, several alcohols and furans. Caspase inhibition Immature MSL, positively correlated with the second axis, was characterised by greater levels of methyl esters, (Z)-6-nonenal and 2,6-nonadienal. Immature LSL and

mLSL fruit were negatively correlated with both first and second axis because the concentrations of esters (acetates, diacetates and non-acetate esters) were low and, moreover, sulphur-containing esters were not detected. Two organic acids were identified: citric and malic acid (Table 1). Citric was the dominant acid in both maturity stages and genotypes. The levels of malic acid CYTH4 were approximately eight times lower than citric acid. The same acids were the dominant acids in cantaloupe melon (cv. Mission) (Lamikanra, Chen, Banks, & Hunter, 2000). Wang et al. (1996) found that citric acid increased slightly with increasing maturity in the melon of cv. Makdimon. This was also observed in our results; however, the increase of citric acid was not significant

for either genotype (Table 1). The sugars identified in the samples were glucose, fructose and sucrose. The results agree with those stated by Wang et al., 1996 and Lester and Dunlap, 1985, and Beaulieu, Lea, Eggleston, and Peralta-Inga (2003). As shown in Table 1, glucose and fructose decreased with increasing maturity, whereas sucrose increased significantly for both genotypes. Comparing the two genotypes, it can be seen that sucrose was significantly higher in LSL genotype. This probably happened because LSL fruit do not develop an abscission zone, and as a result the fruit may be harvested later, thus allowing for a longer period of sugar accumulation and higher sugar content (the major component of soluble solids in melon).

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