Cassava Family: Euphorbiaceae (พืชมีน้ำยาง) Genus: Manihot Species: esculenta © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Root: tap root system (from seed) ปลูกด้วยเมล็ด primary root secondary root adventitious root cotyledon true leaf © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Root: fibrous root system (from cutting) ปลูกด้วยท่อนพันธุ์ cutting shoot root from cambium root from shoot root from bud © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

รากที่งอกจาก cambium เท่านั้นที่ขยายเป็นหัว Root: storage root รากที่งอกจาก cambium เท่านั้นที่ขยายเป็นหัว storage root lateral root stem © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

รูปร่างของหัวมีหลายแบบ

Storage root: cross section periderm peel cortical region cambium central pith cambium peel primary xylem storage parenchyma © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Stem: hard wood dichotomous branching bud leaf scar trichotomous © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Leaf: phyllotaxy = 2/5 spiral © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Leaf: simple leaf petiole stipule stem © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Leaf: simple leaf leaf blade vein petiole © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Inflorescence: panicle เป็นพืชพวก monoecious เนื่องจากเกสรตัวผู้และตัวเมียแยกอยู่คนละดอกบนต้นเดียวกัน Inflorescence: panicle peduncle rachis female flower male flower rachilla © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Staminate flower anther stamen filament perianth rachilla แบ่งเป็น 2 วง - 5 วงใน filament สั้น - 5 วงนอก filament ยาว © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Pistillate flower stigma pistil ovary grandular disc perianth - ovary มี 3 carpel - stigma สีขาว © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Fruit: capsule (pericarp = เยื่อหุ้มผล) wing (ridge) exocarp mesocarp endocarp seed © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Fruit: capsule © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University

Seed mottle raphe caruncle © Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University