Production and performance of sugarcane seeds (caryopses) from different hybridizations involving RB92579

Abstract

A major challenge in sugarcane breeding program is the obtaining of enough number of seeds (caryopses) for the development of new improved cultivars. Genotypes differ in their function as pollen recipient and pollen donor, which also affect the seed performance. Thus, the aim of this study was to verify the production and performance of sugarcane seeds from different hybridizations involving RB92579 as pollen recipient and pollen donor. Twelve bi-parental crossings were carried out involving RB92579 and other different genotypes randomly chosen. Seed production potential was evaluated by percentage of fertile spikelets and caryopsis fresh weight. The seed physiological potential was determined by evaluating germination and vigor (index of germination rate, number of normal seedlings per gram of fuzz, and seedling dry weight). The results showed better performance for RB92579 as pollen donor for all characteristics studied. Therefore, RB92579 sugarcane cultivar should be used as pollen donor during hybridizations, condition that permits a greater production and physiological performance of seeds for the sugarcane breeding programs.

Sugarcane productivity and economic viability in response to planting density

“…This finding contradicts the conclusion of Chiluwal et al (2018), who found that more spaced sugarcane plants contained a higher number and production of stalks. Another factor that may have influenced these results is that the RB92579 variety is highly productive and adapted to abiotic stress conditions (Diniz et al, 2018).…”

“…The sugarcane variety used was RB92579, characterized by high productivity and adaptability to adverse environmental conditions, and widely cultivated in the Northeast region (Diniz et al, 2018).…”

RB0442 - drought tolerant sugarcane cultivar

“…RB0442 was compared to the standard cv. RB92579, an important commercial cultivar for the sugarcane sector in Brazil as well as for sugarcane breeding (Diniz et al 2018).…”

Viability and vigor of sugarcane (Saccharum spp. Hybrid) seeds from intrageneric and intergeneric crosses at various storage periods

“…In P18, S. officinarum as the pollen recipient, while at P14, S. officinarum as a pollen donor. [13] reported that the RB92579 variety as a pollen donor and recipient had an effect on the viability and vigor of the seeds produced. However, contrary to the results of this study, hybridized seedlings involving RB92579 as a pollen donor showed stronger root growth compared to those produced from RB92579 as a pollen recipient in the same crossing year.…”