Registration of ‘CP 13‐4100’ sugarcane

Abstract

CP 13-4100' (Reg. no. CV-202, PI 698546) sugarcane cultivar (a complex hybrid of Saccharum spp.) was developed through cooperative research conducted by the USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc. The Florida Sugarcane Variety Committee (FSVC) released CP 13-4100 in June 2020 to growers for commercial cultivation on mineral (sand) soils. It originated from a polycross made at Canal Point (CP) on 3 Dec. 2008 where CP 96-1252 was the female parent and the male parent was unknown and could be any one of genotypes used in the polycross. CP 13-4100 was released by FSVC for its high cane and sucrose yields, acceptable commercial recoverable sucrose, and resistances to orange rust, leaf scald, Sugarcane mosaic virus strain E (mosaic), and smut, and acceptable levels of susceptibility to brown rust. CP 13-4100 and commercial reference checks (i.e., CL 88-4730, CP 96-1252, CPCL 97-2730) yield data were collected from 12 harvests (i.e. three crop cycles-plant cane, first, and second ratoon-at four sand-soil locations) in final-stage replicated yield trials. Compared with CL 88-4730 and CPCL 97-2730, CP 13-4100 had significantly (P ≤ .0001) higher cane yield (tonnes of cane per hectare: 18.7 and 29.5%), sucrose yield (tonnes of sugar per hectare: 26.3 and 30.7%), and economic index (EI; 10.9-16.9%) and no significant differences from CP 96-1252 in these traits. CP 13-4100 tested negative for the Bru1 marker, which is linked to a quantitative major locus of brown rust resistance. CP 13-4100 could be considered moderately tolerant to freezing among 23 tested genotypes.

Registration of ‘CP 14‐1490’ sugarcane

“…The forward and reverse sequences of these six markers can be found in Momotaz et al. (2022) and in Zhao (2020). Forward primers of each SSR primer pair were fluorescent‐labeled at the 5’ end with FAM 96‐carboxy fluorescein or HEX (4,7,2’,4’,5,7‐hexachloro‐carboxyfluorescein).…”

“…Polymerase chain reaction conditions and programs are described in Momotaz et al. (2022). Two primer pairs with two different dyes were multiplexed in each polymerase chain reaction.…”

“…The concentration, purity, and quality of the DNA concentration were measured using Nanodrop 2000 (Thermo Scientific). Polymerase chain reaction conditions and programs are described in Momotaz et al (2022). Two primer pairs with two different dyes were multiplexed in each polymerase chain reaction.…”

“…The markers were developed through the International Consortium for Sugarcane Biotechnology (Cordeiro et al, 2003). The forward and reverse sequences of these six markers can be found in Momotaz et al (2022) and in Zhao (2020). Forward primers of each SSR primer pair were fluorescent-labeled at the 5' end with FAM 96-carboxy fluorescein or HEX (4,7,2',4',5,7-hexachloro-carboxyfluorescein).…”

Registration of ‘CP 14‐1934’ sugarcane for Florida organic soils

“…The genetic fingerprinting of CP 14‐1934 was compared with that of nine commercial cultivars. These commercial cultivars included CP 96‐1252 and CP 00‐1101 (reference cultivars used in Stage 2–4 trials) along with seven released CP cultivars: ‘CP 10‐2195’ (Islam et al., 2019), ‘CP 13‐1223’ (Islam et al., 2022), ‘CP 12‐1417’ (Sandhu et al., 2022), ‘CP 12‐1753’ (Sood et al., 2022), ‘CP 13‐4100’ (Momotaz et al., 2022), ‘CP 06‐2400’ (Zhao, Comstock, et al., 2015), and ‘CP 06‐2042’ (Davidson et al., 2017). The SSR fragments were binary scored as presence (1) or absence (0) in each genotype.…”