• 1Hitendra Kumar
• 2Shalini Sharma
• Deepak Som

Abstract: The miscellany in Pest populations and continuous selection of virulent biotypes necessitate continuous supplementation of raw material in the form of donor germplasms for insect resistance breeding programmes. Sixty five rice germplasms obtained were screened under field conditions under tarai region of Uttarakahnd, India to find out most promising germplasm against yellow stem borer. Among MRST (Group-I) entries RNR 23264 was found highly resistant against yellow stem borer (YSB) at vegetative stage. Resistance reaction was recorded in MTU IJ 206-7-4-1 and RP 4511-260. At reproductive stage HRI 126 was rated as immune against yellow stem borer while BG 380-2 and PTB 33 exhibited moderate level of resistance. At vegetative stage of paddy crop, RP-4642-669 from MRST (Group-II) was highly resistant but at reproductive stage Resistant reaction was observed in RP 4516-3-8, MO 1 and RP 4643-713.

Yellow stem borer, rice, MRST enteries, screening, resistance

"IDENTIFICATION OF NEW SOURCES OF RESISTANCE AGAINST YELLOW STEM BORER (Scirpophaga incertulas) UNDER FIELD CONDITIONS.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 3, page no.a376-a382, March-2023, Available :http://www.jetir.org/papers/JETIR2303049.pdf

"IDENTIFICATION OF NEW SOURCES OF RESISTANCE AGAINST YELLOW STEM BORER (Scirpophaga incertulas) UNDER FIELD CONDITIONS.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 3, page no. ppa376-a382, March-2023, Available at : http://www.jetir.org/papers/JETIR2303049.pdf