Response of Pineapple Callus (Ananas comosus Merr.) through In-Vitro Colchicines Treatment - Istiqomah, Nurul; Institut Ilmu Kesehatan Bhakti Wiyata Kediri (Tadris Biologi Fakultas Ilmu Tarbiyah dan Keguruan IAIN SYEKH NURJATI CIREBON, 2018)