BIOL 2242 Lecture Notes - Lecture 34: Pitaya, Gymnocalycium, Accessory Fruit
5 Feb 2018
School
Department
Course
Professor
Document Summary
The gymnocalycium cultivar -- sometimes called rubyball cactus or moon cactus -- is actually two cacti in one. A pure red cactus seedling lacks the ability to produce chlorophyll and will die unless it is grafted onto a green one. The green feeds its mutant mate sugar molecules produced from water and carbon dioxide. Summer 2017: fruit development is triggered by fertilization (via hormone signals) but parthenocarpic fruits develop without seeds, some seedless fruits are genetically programmed; others stimulated by hormone sprays e. g. , seedless grapes with ga. Something) milk = endosperm, outer part of fruit already removed. Fyi newsflash: avocado is a single-seeded berry not a drupe. Simple fruits continued: dry fruits, dehiscent (opens at maturity) (fig. Milkweed (asclepias) follicle, p. 492: follicle e. g. , milkweed, single carpel splits down 1 side, early fruit type (fig. Legume splits of 2 sides e. g. , pea, bean (fig.
