Yes, there are alternatives to phloroglucinol HCl for staining lignin in plant tissues, including: - Aniline Sulfate: Another reagent that stains lignin a yellow color. - Toluidine Blue: A general stain that can also highlight lignin in a blue-green hue. - Safranin: Often used in combination with other stains to differentiate lignified from non-lignified tissues.
