TY - JOUR AU - Arroyo-Oquendo, Carlos AU - Mora, Jorge PY - 2003/09/19 Y2 - 2024/03/29 TI - Relationship between the development of the spear leaf and the weight of the foliar heart of peach palm (Bactris gasipaes Kunth). JF - Agronomía Mesoamericana JA - Agron. Mesoam. VL - 14 IS - 2 SE - Articles DO - 10.15517/am.v14i2.11944 UR - https://revistas.ucr.ac.cr/index.php/agromeso/article/view/11944 SP - 157-164 AB - <p>The varieties used were developed from</p><p>germplasm coming from three different geographical regions,</p><p>Diamantes-10 and Diamantes-20 from the High Amazon area</p><p>and Panamá, respectively; and Diamantes-1 and Utilis-</p><p>Tucurrique from Costa Rica. The results showed differences</p><p>among them. One example of the spectrum of correlations and</p><p>regressions obtained in this work, is the synchronism of</p><p>development among the leaf parts . sheath, petiole and blade .</p><p>which is greater in the varieties Utilis-Tucurrique and</p><p>Diamantes-1 than in the other two. The last two differ between</p><p>themselves in several aspects. For the correlation between</p><p>foliar heart of palm weight and sheath length of the spear leaf,</p><p>the variety Diamantes-1 shows the highest coefficient (r =</p><p>0.83), followed by Utilis-Tucurrique (r = 0.77), while</p><p>Diamantes-10 and Diamantes-20 had lower values (r = 0.60 and</p><p>0.57 respectively). The correlation between foliar heart of palm</p><p>weight and the degree of opening of the spear leaf lamina is</p><p>larger for Diamantes-1 (r = 0.86) than for Utilis-Tucurrique (r =</p><p>0.76) and Diamantes-10 and Diamantes-20 (r = 0.71 and 0.70</p><p>respectively). From those results it is clear that the prediction</p><p>of the maximum weight reached by the foliar heart of palm is</p><p>more accurate in Diamantes-1 (r = 0.86) than in the other three</p><p>varieties (r = 0.76, 0.71 and 0.70). The regression curves</p><p>clearly show the best spear leaf blade opening stages to harvest</p><p>for each variety. Besides, there is no correlation between the</p><p>degree of opening of the spear leaf blade and the caulinar heart</p><p>of palm weight.</p> ER -