Pathogen produced many life cycle in during crop period is known as compound interest disease.
Pathogen produced one life cycle during crop period is known as simple interest disease.
Pedigree method is most commonly used scheme for segregating generation in self-pollinated crops.
Perticular disease occur in regularly and sever from called hot spot of particular disease.
PGSH51 was first commercial hybrid of rapeseed.
Phenology is plant important for determining its yield and adaptability.
Phenotypic differences in pure line variety is due to environment.
Phenotypic variation of clone is due to environment.
Photoperiod sensitive genetic male sterility means gene expressed only a particular photo period.
Physical barrier present between anthers and stigma to prevent self pollination called herkogamy.
Physical mutagen are given most number of mutant varieties.
Phytoalexin have either fungicidal or fungistatic category.
Pistil mature after stamens called protoandry.
Pistil mature prior to stamens called protogyny.
Pitic62 is a variety of wheat resistant to drought.
Plant grow and develop in desert land called xerophytes.
Plant grow and develop in excess of water is known as hydrophytes.
Plant grow and develop in nutrient solution in absence of soil moisture called hydroponics.
Plant grow and develop in optimum soil moisture called mesophytes.
Plant grow and develop in salt condition called Halophyte.
Plasma gene mutation is induced by ethidium bromide.
Pollen along with pollen tube, containing one vegetative and two generative nuclei is known as microgametophyte.
Pollen mother cell (PMC) undergoes meiosis and produces four haploid cells called microsporogenesis.
Pollen mother cell undergoes meiosis and produce four microspore.
Pollen of one flower falls on stigma of another flower of same plant is known as geitonogamy.
Pollination control is difficult where develop a synthetic variety is of great value.
Pollination occurring naturally without restrictions is known as cross-pollinated/open-pollinated varieties.
Poly cross is used for GCA generally pollination is difficult to control.
Polygenes, the allele of gene having no effect of trait is known as negative allele.
Polygenic reaction is quantitatively inherited.
Population selected by mass selection looking like mixture of pure lines.
Porometer an instrument measure stomatal apparatus.
Position of gene chromosome called locus.
Potato variety Kufari red is the selection from Darjeeling red round.
Potato variety Kufari safed is a selection from phulawa.
Powers (1944) suggested that heterosis term used as superior or inferior hybrid to parents.
Prabhavati is a mutant variety of rice.
Present breeding method totally depend on artificial selection.
Primex fist (Brassica hita) was first variety develop for mutagenesis.
Pristely (1978) suggested Boom and Bust cycle.
Probably parent of G. hirsutum is G. hirsutum and G. raimondii.
Production of male (microspore) and female (megaspore) gametes called gametogenesis.
Production of male gametes or sperm called microgametogenesis.
Production of megaspore (female gametes) called megasporogenesis.
Progeny test is based on progenies produced by crossing with an inbred process is known to recurrent selection for SCA.
Progeny test is based on progenies produced by crossing with an open pollinated synthetic variety process is known as recurrent selection for GCA.
Progeny test is the evaluation of the progeny on the basis of performance.
Progeny test was develop by Vilmorin.
Proline is the associated with the drought tolerance. Ideotype of wheat and rice for dry land agriculture was proposed by R.D. Asana and Choudhary and Rao (1982) respectively.
Proportion genotype in a population is known as genotype frequencies.
Proportion of economic yield to biological yield called harvest index.
Protandry generally occurs in sugarbeet and marigold.
Protein term is suggested by Berzelius (1930).
Protein term used by the Muldar.
Protina and Rattan are variety of maize having Opaque-2 gene for high nutritional quantity specially for lysine and tryptophane enzyme contents.
Protogyny is found in pearl millet.
PSCS is a proline biosynthesis gene.
Psychrometer an instrument used to measure tissue water potential.
Pulse off – season crop grown in Sangala (Kinnur) and Lahul spiti (H.P.)
Pure line and clone crop select a single plant and develop a new variety.
Pure line is the progeny of single, homozygous self pollinated plants.
Pure line selection has been most commonly used method for self pollinated and often cross pollinated crop.
Pure line selection is also known as individual plant selection.
Purine is replaced by purin and pyrimidin is replaced by pyrimidin called transition.
Purity of pure line variety maintained by mass selection.
Pyrimidin is replaced by purin and vice versa known as transversion.
Random mating is usually used for progeny testing.
Ranjan is a mutant variety of lentil.
Ratio of beneficial mutation is 1:800-900.
Recessive mutation is detect almost impossible in clonal crops and difficult in polyploidy species.
Recessive oligogenic mutation can be selected in M2 generation.
Removal of methyl group (-CH3) group from DNA is called demethylation.
Removal of -NH2 group from DNA bases is known as deamination.
Reproduction capacity of the species is known as fecundity.
Reproduction without union of male and female gamets is known as asexual reproduction.
Resistant governed by oligogenes, selection is more effective than polygenes.
Rhoades discovered cytoplasmic male sterility.
Rice flower have six stamens.
Rice variety Damodar, Jhona 349 and Getu. Are highly tolerant to saline/alkaline soil.
Rice variety Jaya and Padma were developed through cross from T1XT141.
Richey (1927) suggested convergent improvement in crop plants.
Ro is a variety of rapeseed having low erucic acid content in Canada.
Pathogen cause disease of all host genotype called aggressive pathogen.
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