Evaluation of Seed Germination, Establishment, and Growth of Different Black Adenium (Adenium arabicum) Hybrids under Prayagraj Agro Climatic Conditions

The experiment was conducted in the Department of Horticulture, Sam Higginbottom University of Agriculture Technology and Science, Prayagraj, during 2021-2022. The experiment was laid out in Completely Randomized Design (CRD) with 7 hybrids and each hybrid was replicated 3 times. The different hybrids used in the experiment were npy x Golden Crown x Black Hawk, Maung x Red Bracelet, Maung x Black mkmk, Black Hawk, Red Bracelet x Big Flower x Black Hawk, Bb x Black Chadda Petch, Bb(F1) x npy Golden Crown x Black Hawk. The result obtained showed that the hybrid Black Hawk showed significantly better performance in parameters like germination percentage (86 %), seed vigour index (610), seed viability (0.86), germination speed index (1.37), survival percentage (80 %), seedling height, (8.5 cm), no. of leaves per seedlings (12), estimated leaf area (4 sq.cm), stem/caudex diameter (1.56 cm) and taproot length (6.2 cm), which was par with the hybrid npy x Golden Crown x Black Hawk.