TY - GEN AU - SINGH, B D TI - PLANT BREEDING: PRINCIPLES AND METHODS U1 - 631.52 SIN/PL CY - LUDHIANA, KALYANI KW - CLONAL CROPS KW - CROSS POLLINATED CROPS KW - EVALUATION AND MULTIPLICATION KW - GENERAL CONSIDERATIONS KW - SELF-POLLINATED CROPS KW - SPECIAL APPROACHES KW - STRESS RESISTANCE ER -