Productivity of new sugarcane hybrids in the Lajas Valley and their resistance to smut and rust
PDF

Keywords

Sugarcane--Varieties--Puerto Rico
Sugarcane--Diseases and pests
Sugarcane--Diseases and pest resistance
Smut fungi
Rust fungi
Puccini

How to Cite

Echávez-Badel, R. (1991). Productivity of new sugarcane hybrids in the Lajas Valley and their resistance to smut and rust. The Journal of Agriculture of the University of Puerto Rico, 75(3), 287-293. https://doi.org/10.46429/jaupr.v75i3.3597

Abstract

Seventeen promising new sugarcane hybrids and three check varieties were planted in the Lajas valley, a semi-arid and irrigated area of southwestern Puerto Rico. Plant cane and ratoon crops were evaluated for yield and resistance to smut (Ustilago scitaminea Syd.) and rust (Puccinia melanocephala H. Syd. & P. Syd.). All new hybrids tested were resistant and tolerant to smut and rust. The smut incidence on susceptible check increased after ratooning. However, rust resistance and susceptibility of sugarcane hybrids and check varieties remained unchanged throughout a three-crop cycle. Combined analysis of variance of 2 years (plant and first ratoon crops) indicated that yields (sugar ton/ha) of five hybrids were consistently higher than those of the other genotypes tested, including the standard check variety PR 980.

https://doi.org/10.46429/jaupr.v75i3.3597
PDF

Downloads

Download data is not yet available.