UEL 175: a novel lipoxygenase-free soybean cultivar with kunitz trypsin inhibitor absence

Valeria Carpentieri-Pipolo

doi:10.1590/1984-70332015v15n3c33

Abstract

UEL 175 is lipoxygenase-free soybean cultivar and has absence of the antinutritional factors kunitz trypsin inhibitor (SKTI). UEL 175 presents high yield potential and good adaptation under no-tillage. It is resistant to soybean stem canker, brown stem rot, frogeye leaf spot, and bacterial pustule.

Highlights

PEDIGREE AND BREEDING METHODSSoybean [Glycine max (L.) Merrill] is considered as a high quality source of oil and protein for food and feed
Soy products made of soybeans with lipoxygenases-free seeds have shown improved flavor characteristics (Hajika et al 1991, Hajika et al 1992, Carrão-Panizzi and Kitamura 1995)
Among the antinutritional factors present in soybean seeds, the main one is the protease inhibitors kunitz trypsin inhibitor (SKTI), which is usually inactivated by heat treatment

Summary

PEDIGREE AND BREEDING METHODS

Soybean [Glycine max (L.) Merrill] is considered as a high quality source of oil and protein for food and feed. Heat treatment does not completely eliminate SKTI, and it may considerably decrease protein solubility Eliminating this antinutritional factor, and obtaining lipoxygenase-free soybean varieties are of great importance and are desirable for the feed and food industry. The soybean breeding program currently in progress at the Agronomy Department of Londrina State University, Londrina – PR has focused on yield, and on quality improvement of soy-derived products used for feed and food Pursuing these objectives, UEL 04-6 x UEL 04-5 crossing was carried out. The potential of UEL 175 is being lipoxygenase-free and lacking the antinutritional factors kunitz trypsin inhibitor (SKTI) This seed line works as parents to develop elite breeding populations for breeding programs aiming at quality improvement of soy-derived products used for feed and food. Results of preliminary feeding trials, with chicks and young pigs, revealed that gain/feed was significantly higher when using lines lacking the kunitz trypsin inhibitor than when using cultivars

OTHER CHARACTERISTICS

Findings

MAINTENANCE AND DISTRIBUTION