Melons were cut in half longitudinally and heart and locule tissues were sampled.
The tapetum is a nutritive cell layer that lines the locule containing the developing microsporocytes.
British Dictionary definitions for locule
locule
/ˈlɒkjuːl/
noun (pl) locules, loculi (ˈlɒkjʊˌlaɪ)
1.
(botany) any of the chambers of an ovary or anther
2.
(biology) any small cavity or chamber
Word Origin
C19: New Latin, from Latin: compartment, from locus place
locule in Medicine
locule loc·ule (lŏk'yōōl) or loc·u·lus (-yə-ləs) n. A small cavity or compartment within an organ or a part of an animal.
locule in Science
locule
(lŏk'yl) A small cavity or compartment within an organ or part of an animal or plant, as any of the cavities within a plant ovary in which the ovules develop.