Genotype interaction x Helianthus post-harvest longevity
Arthur dos Reis Gonzaga; Ricardo Tadeu FariA; Marcelo Fernandez de Oliveira and Vânia Beatriz Rodrigues Castiglioni
The post-harvest longevity of six sunflower genotypes developed by Embrapa Soybean was assessed by comparing the control T1 (stems in water) with six pulsing treatments with sucrose, T2 to T6, (20, 40, 60, 80, 100 gL-1) and T7, sucrose (40 gL-1) associated with 200 mgL-1 8-HQC. After pulsing treatment for 24h, the inflorescences were placed in a maintenance solution with 20 gL-1 sucrose and assessed daily by score criteria, defined to quantify the longevity in number of vase days. The pulsing treatments promoted longevity in various ways among the genotypes tested. The best treatments were: T5 and T6 (genotype 153); T3 and T7 (genotype 101); T6 (genotype 181); T7 (genotype 127); T4 and T5 (genotype 140) and T4 (genotype 114). Longevity was increased by two to three days in these treatments compared to the control.