Flag leaf dimensions and pigments in backcross progeny of MTU1010/Oryza rufipogon


Venkateswara Rao Y1 , Krishnam Raju A1 , Divya B2 , Malathi S1 , Sukumar M1 , Vishnu Kiran T1 , Subrahmanyam D1 , Sarla N2 and Voleti S R1 *

ICAR – Indian Institute of Rice Research, Rajendranagar, Hyderabad.

ICAR- National Professor Project, IIRR, Hyderabad, Indian Institute of Rice Research (IIRR)

*Corresponding author email: voletisr58@rediffmail.com

Received: 3rd May 2019; Accepted: 2nd June 2019


Flag leaf photosynthesis related traits like chlorophyll a, b, total chlorophyll and carotenoids were evaluated in a set of 30 BC2 F1 plants derived from MTU1010/ Oryza rufipogon IC309814. Significant differences were observed in chlorophyll a, b, total chlorophyll and carotenoid content between parents. Chlorophyll a, b and total chlorophyll showed highly significant positive correlation with chlorophyll/carotenoid in the introgression lines (ILs). IL198-15 showed higher chlorophyll a, b, total chlorophyll, chlorophyll/carotenoid, flag leaf width and area than both parents. IL-198-16 and IL-198-29 showed higher chlorophyll a, b, total chlorophyll, carotenoids, chlorophyll a/b ratio, chlorophyll/carotenoid, flag leaf length, width and area than MTU1010.

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