Genetics and Plant breeding pointers 44

·         2n number of completely homozygous genotype in F2 population.
·         2n number of phenotype produced in F2 when full dominance.
·         3n number of phenotype produced in F2 when no dominance
·         5- bromouracil and 5 chlorouracil is a base analogue compound.
·         6.25 gm proteins contain one gram of nitrogen.
·         A chimera having different genotype in its different tissue/cell.
·         A common reason for the failure of distant hybridization due to abortion of endosperm.
·         A control (Check) variety used for comparing the performance of newly developed strain.
·         A dosage of mutagen or chemical which kill 50 percent of population called LD₅₀.
·         A general combining ability (GCA) in small number of parents is more important than specific combining ability (SCA).
·         A group of individuals having common parents called line.
·         A hot spot of particular disease means area where disease occurs regularly in severe form.
·         A mutagen increase the rate of mutation of another gene called mutator gene.
·         A pure line in the population having identical genotype.
·         A rapeseed mustard variety has low erucic acid low glucosinolate and low fibre called triple zero variety.
·         A rapeseed mustard variety having very low erucic acid called single zero varieties.
·         A set of chromosomes normally found in somatic cell of a particular species called somatic chromosome complements.
·         A test cross, crosses are made to estimate the combining ability of lines.
·         A trisomic condition is individual having three homologs of one chromosome of the disomic complements.
·         A variety have a mixture of several isogenic line for different gene of disease called multiline variety.
·         AABB is a genomic constituents of Brassica juncea.
·         Abbreviation of CAM (Crassulacian acid metabolism).
·         Abscisic acid is a stress hormone and synthesized after one hour of deficit of water.
·         Abscisic acid is the stress hormone.
·         Abscisic acid promote leaf senescence.
·         According to overdominance hypothesis heterozygosity is the cause of heterosis.
·         After treatment of mutagen create of mutation due to transition, transversion and deletion and insertion of base pair.
·         Akashi is a variety of rice to tolerant to drought.
·         Ala3 is a freeze stress gene.
·         Allogamy means crops are cross-pollinated.
·         Allopolyploid is the individual containing two or more distinct genomes contributed by two or more distinct species.
·         Alp gene resistant to Al toxicity in winter barley.
·         Alpha particle give helium and least penetrating capacity.
·         Alpha rays Beta rays and neutrons are particulate radiations use in mutation.
·         Amount of genetic variability available in population is known as genetic bases.
·         Amphimixis is the condition i.e. union between maternal and paternal genome in gametic fertilization.
·         An allohexaploid individual having two copies each of three distinct genome.
·         An allotetraploid individual having two copies having two copies each of two distinct individual.
·         An individual cell containing more than one type of genotype is known a chimera.
·         An isochromosome both arm are identical in gene contents.
·         An isotopes atoms of same elements having different atomic weight.
·         An organism recessive lethal mutation will kill in homologous state.
·         Ancestor of self pollinated crop is cross pollinated crop.
·         Ancon short legged mutant sheep was first known mutant breed.
·         Aneuploid are useful for identify chromosome involved in translocation generally triploid plants do not produce true seed.
·         Aneuploid produced substitution line.
·         Aneuploids is useful for linkage group and particular genes to a chromosome.
·         Anther and stigma of bisexual flower mature at the same time promote self pollination called homogamy.
·         Anther has four pollen sac.
·         Any agent create mutation is called mutagen.
·         Any part of gene which function as unit of mutation is called muton.
·         Any substances cause heritable change in plants up to 100 percent is known as super mutagen.
·         Any type of radiation which produced mutation called physical mutagen.
·         Apha particle have double positive charge.
·         Apomixis can be used for fixation of heterosis.
·         Apomixis, diplospory, parthenogenesis, adventitive embryo, apogamy, diplospory a type of apomixis.
·         Aroma in rice due to recessive gene.
·         Aruna and Sowbhagya are famous mutant variety of castor.
·         Asexually propagated each variety is clone.
·         Asexually propagated plant produced identical progeny.
·         Assumption of scientist phytoalexin is involve in hypersensitive reaction.
·         Atlas 66 is a high protein variety of wheat.
·         Autopolyploid can be induced by colchicine treatment.
·         Autotetraploid seed is steril.
·         Autotetraploid watermelon and banana show high degree of seed sterility.
·         Autotriploids are best source of aneuploids.
·         B. campestris and B. nigra is less salt tolerant than B. juncea.
·         B. carinataa develop from B. nigra and B. oleracea.
·         B. compestris have genome AA.
·         B. juncea develop from cross between B. nigra and B. campestris.
·         B. Oleracea has the genome CC.
·         Back cross method is generally used for the transfer of gene resistant of one variety to another.
·         Bala, Krishna, Ratana, Sabarmati, Cauvery, and Karuna varieties of rice were developed through pedigree method.
·         Barley variety Karan 280 is tolerant to drought.
·         Barley variety proctor shows completely tolerance against powdery mildew diseases.
·         Before anthesis 60-70% dry matter produced by wheat crop

·     (BOAA) derived from B-N-oxalyl Alpha, B, diamino propionic acid.