Genetics of White Sheath and Bleached Leaf Mutants in Pearl Millet

Rao, S A and Mengesha, M H and Reddy, C R and Rao, Y S (1990) Genetics of White Sheath and Bleached Leaf Mutants in Pearl Millet. Journal of Heredity, 81 (2). pp. 159-162. ISSN 0022-1503

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Abstract

Two spontaneous chlorophyll-deficient mutant traits, white sheath and bleached leaf, were identified from Pennisetum glaucum [P. americanum] germplasm accessions IP7626 (India) and IP10729 (Sudan), respectively. Normal light green leaf sheaths of the white sheath mutant turned white one week after germination. Maximum expression occurred at flowering, although the mutant plant character persisted until maturity. F2 segregation of reciprocal crosses between normal and mutant plants indicated that the white sheath trait is controlled by a single recessive gene, ws. Normal leaves of the bleached leaf mutant tended to turn yellow from the tip toward the base 10 days after emergence, whereas the bottom third of the leaf blades, the midribs and a small portion on either side of the midribs remained green. Bleached leaf expression increased until floral initiation when plants became green. Inheritance studies indicated that the bleached leaf mutant trait is controlled by a single recessive gene, bl. Linkage studies showed that there are 43 crossover units between the bleached leaf and glossy traits and 45 - 54 between the white sheath and yellow leaf traits

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Millets > Pearl Millet Others > Genetics and Genomics
Depositing User:	Mr B K Murthy
Date Deposited:	01 Apr 2014 10:53
Last Modified:	01 Apr 2014 10:53
URI:	http://oar.icrisat.org/id/eprint/7726
Official URL:	http://jhered.oxfordjournals.org/content/81/2/159....
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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