Marker-assisted introgression of QTLs for yield under moisture stress into elite varieties of rice (Oryza sativa)     

Jeevula N. Bhukya  Swarajyalakshmi N. Bollineni  Gopalakrishna Kadambari  Reddiyamini Bommisetty  Eswar R. Gudikati  Withanawasam M. Darsha  Keerthi Issa  Srividhya Akkareddy  Suresh N. Eslavath  Ajay K. Dokuparthi  Aparna Eragam  Vinodkumar N. Moode  Rameshbabu Pottepalem  Srilakshmi Chintala  Eswarareddy P. Narrareddy  Bahbhen Tanti  Mandal P. Nimai  Pallavi Muniraju  Yeswanth V. Janaki  Lakshminarayana R. Vemireddy 《Plant Breeding》2020,139(6):1076-1089

Rice production is severely constrained by the moisture stress. The present study was undertaken to transfer two important QTLs viz., (qDTY2.2 and qDTY4.1), which controls yield under moisture stress (DTY) into two elite varieties, that is, MTU1010 and NLR34449 through marker-assisted breeding. Foreground and background selections of backcross generations, that is, BC₁F₁, BC₂F₁ and BC₂F₂ identified several promising introgression lines (ILs) with two QTLs and single QTLs with an appreciable level of recovery of recipient parent genome. In ILs, the recovery of MTU1010 genome content was estimated to be 83%–93% while the recovery of NLR34449 was 84%–92%. The two-QTL ILs of MTU1010 and NLR34449 backgrounds (qDTY2.2 and qDTY4.1) have shown substantial yield advantage (32 to 84%) over the single-QTL ILs (either qDTY2.2 or qDTY4.1) under moisture stress conditions. Among all, two ILs, MBC-124 and NBC-127 are the best high yielding lines under moisture stress conditions. These outyielded ILs have the potential to be released as varieties in rainfed ecosystem and also can be used as donors in the existing breeding programme in rice.  相似文献   

Molecular characterization of short-day onion genotypes by intron length polymorphic (ILP) markers     

Khade  Yogesh Popat  Salunkhe  Shubham Rajaram  Manjunathagowda  Dalasanuru Chandregowda  Sinhasane  Shalaka Ramling  Mahidar Gowd  Talamarla Yeswanth  Mahajan  Vijay  Singh  Major 《Genetic Resources and Crop Evolution》2022,69(6):2077-2086

Genetic Resources and Crop Evolution - Onion (Allium cepa L.) is an economically important vegetable that is in high demand around the world. It is a highly cross pollinated crop, which could...  相似文献