Tropical and Subtropical Agroecosystems
Plant development is a programmed process that starts from seed germination to maturity and fruiting. It is mainly modulated by a combination of dormancy, plant cell regulators (Richards et al., 2001, Olszewski et al., 2002, Peng and Harberd, 2002; Sun and Gubler, 2004; Smalle and Vierstra, 2004) and environment factors such as moist, temperature, oxygen, and light (Toh et al., 2008). Identification of triggers of seed germination and seedling growth promotion factors is crucial for the development of
(Andrade-Rodriguez et al., 2008; De Mello et al., 2009; Venier et al., 2012). The germination inhibitors present in the papaya seed testa and sarcotesta control its germination (Chow and Lin, 1991; Paz and Vázquez, 1998) and to eliminate them, papaya growers have applied actions such as removing the sarcotesta from seeds, soaking and washing seeds in water (Mirafuentes, 1997) or sun drying (Jiménez 1996). Growth and development in plants is controlled by the selective removal of short-lived regulatory proteins.
Seeds that were exposed to a combined treatment, imbibed in G solution and inoculated a cell mixture of Azospirillum exhibited the maximum germination, the greatest emergence, seedling height, and accumulated the highest chlorophyll amount as well. This treatment, which is economic and practical, can be attractive to enhance papaya seed germination capability.
Downlaod the full document pdf