Plant Breeding

Plant Breeding is the current phase of evolution ----- Simmonds (1979) .
Stress Breeding also called resistance breeding.
Physiological plant breeding is also called ideotype breeding .
Transfer of desirable genes from wild species to cultivated species is called introgressive breeding.
The breeding which is done through biotechnology is called transgenic breeding.
Principles and methods of pure seed production is maintenance breeding.
Neurotoxin in Keshari leads to paralysis of lower limbs.
Classical plant breeding - 1900-1980
Modern plant breeding - 1980 on wards.
Tift23A male sterility in pearl millet , kafir60 male sterility in sorghum .
Stable performance of crops over a wide range of environment is adaptability.
Land races are of primitive type . First land-races for rice given by Vavilov .
Obsolete varieties are the improved varieties of recent past .
Modern cultivars are currently cultivated advanced or improved cultivars .
Advanced breeding lines are pre released cultures and stocks.
Wild relatives used as a last resort of stock because it's crossing leads to hybrid sterility , in-viability and transfer of several undesirable genes into cultivated species

Plant Breeding is the current phase of evolution ----- Simmonds (1979) .