Evaluation of some orange fleshed sweet potato (Ipomeae batatas) genotype for yield and flower production

Abstract

A field experimented was conducted in 2018 planting seasons to evaluate some orange fleshed sweet potato genotypes for yield and flower production. The experiment was laid out in a randomized complete block design with a single factor having ten treatments (potato genotypes) replicated three times. The potato genotypes were; Delvia, Kwara, Mascot-12, Naspot-71, Naspot 8, TIS 8164, TIS 8710087, umuspo-1, umuspo-2 and umuspo-3. Some growth parameters (vine length (cm), petiole length (cm), internodes length (cm), number of branches, days to anthesis, number of flowers per plant) were collected at 18 WAP. Also yield parameters (Number of root per plant, roots girth, root weight per plant and root yield per hectare t/ha) were also collected at the maturity of the roots. 18 WAP vine length at 18 WAP, was highest in TIS 8164 (221.32cm) followed by Naspot-8 (213.51cm) through not significant but significance was observed with some other varieties, while the least performer was TIS 8710087. Mean petiole length equally revealed significance, with TIS 8164 producing the highest this significantly differed from others the least here is TIS 8710087 2.05. Significant differences were recorded in terms of number of branches per plants 18 WAP umuspo/2 had the highest (9.9), then Delvia 9.20 and lastly TIS 81864 (3.9). These significantly differed from others table 2. Early flowering was recorded from Delvia (32.6 days) and TIS 8164 (37.0 days) while late flowering from umuspo/3 (58.3 days) although highest number of flowers was obtained from umuspo/3 (14.6) and umuspo/1(14.3) with some significant differences. Also significant differences were observed terms of yield parameters root length and girth, with TIS 8164 revealing the highest root length (18.1 cm), TIS 8710087 as next (17.8cm), and umuspo 3 having the least value of 13.7 cm). Naspot-8 had highest root girth (19.6cm) followed by umuspo/2 (18.5 cm) and mascot-12 (1804 cm) while umuspo/3 had the least (16.4 cm).other yield paraterslike number of roots per plant indicated that TIS 8164 and umuspo-3 had the highest (6.1), Roots weight per plant revealed highest values 2.2 from TIS 8164 of then (1.4kg) in two genotypes; mascot-12 and umuspo 0-3. In terms of root yield per hectare (t/ha), highest values were from TIS 8164 (31.7)umuspo/3 (20.5), mascot-12 19.4 and umuspo-1 (19.3) respectively while the least from TIS 8710087 (12.8) and it significantly differed from the others above.