Registration of Tx3483 through Tx3488 sorghum germplasm with waxy endosperm

Abstract

Six sorghum [Sorghum bicolor (L.) Moench] germplasm lines, Tx3483 through Tx3488 (Reg. no. PL-313 to PL-318, PI 698643 to PI 698648), are proposed for release by Texas A&M Agrilife Research. These lines were developed and tested by the Agrilife Research sorghum breeding and genetics program. Tx3483 through Tx3488 are pollinator parents that combine waxy endosperm with improved agronomic performance and grain functionality. In combination with a waxy endosperm seed parent, these lines produce waxy endosperm hybrids with consistently higher yield than the currently available waxy check hybrid. Additionally, some of these germplasms produce hybrids with improved grain composition and functional properties of the derived flour.

Comparing the effects of grain weathering and presence of fungal communities on waxy and non‐waxy sorghum hybrids grown across Texas

“…Of the 40 genotypes, 26 were homozygous waxy , four were heterozygous waxy , and 10 were homozygous non‐ waxy . All of the homozygous waxy hybrids used ATxArg‐1 as the seed parent and used either experimental or released Texas A&M lines as the pollinator parent (Miller et al., 1992; Kent & Rooney, 2021). For comparison, six inbred lines with known and varied reactions to grain weathering were included as checks.…”

“…These reductions are similar to observations made in other crops, such as barley ( Hordeum vulgare ), wheat ( Triticum aestivum ), and maize ( Oryza sativa ; Oscarsson et al., 1998; Graybosch, 1998; Hallauer, 2000). However, more recent studies indicate that the waxy trait itself may not necessarily cause yield reductions, which would allow for the development of yield competitive waxy sorghum hybrids (Kent & Rooney, 2021; Yerka et al., 2015; Yerka et al., 2016). Even with evidence that the development of high yielding waxy hybrids is possible, the concern that waxy hybrids have increased susceptibility to grain weathering persists.…”