Indentification of true genetic dwarfing sources in foxtail millet (Setaria italicaBeauv.)

✍ Scribed by S. P. Dineshkumar; V. R. Shashidhar; R. L. Ravikumar; A. Seetharam; B. T. S. Gowda

• Book ID: 104618016
• Publisher: Springer
• Year: 1992
• Tongue: English
• Weight: 387 KB
• Volume: 60
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00039400

✦ Synopsis

True genetic dwarfs hither-to not reported have been located in foxtail millet . The dwarfs as a group distinguished themselves from the talls in having altered constellation of characters . The morphological differences were highly significant for plant height, internodal length, and tillering potential . The talls had elongated internodes compared to dwarfs while there was no difference for node number on the main stem suggesting that short internodal length was primarily responsible for dwarfism . The dwarfs also showed slightly higher leaf number per plant, leaf area and harvest index compared to talls . The dwarfs were insensitive to exogenous GA 3 application indicating that GA 3 synthesis is not impaired . This suggests that dwarfing gene sources presently identified are true genetic dwarfs and their behaviour is similar to dwarfs derived from Norinl0 in wheat and Dee-geo-woo-gen in rice . The superior morphological frame makes these dwarfs ideal as far as plant type is concerned and offers immense potentialities in breeding high yielding foxtail millets .