Cultivar A cultivar is a cultivated variety , a population of plants within in a species of plant. Each cultivar or variety is genetically different. Examples are 'Hass' avocado, 'Spear' wheat, 'Caliph' barrel medic. A species is a population that is genetically different from others and rarely interbreeds with other species. Examples are avocado, wheat, barrel medic.
Male sterility is inherited.
Diploid Describes an organism that has two sets of chromosomes in each cell - the typical state of all animals and most plants. The fruit of raspberries and blackberries are clusters of drupelets. The EPP is the difference between embryo sac viability expressed in days, and the time necessary for the pollen to reach it. Endosperm Endosperm is the starchy or sugar storage tissue in seeds. The tissue is derived from the fertilisation of two cells in the embryo sac.