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Genetics and Plant breeding pointers 21 ✓
Oil content of Sunflower- 40-50%
How
much content of poly unsaturated fatty acid (PUFA) are there in the sunflower
oil-90%
Scientific
name of safflower is Carthamus tinctorius.
Banarasi
rai is variety of Black or true mustard
The
fibers are separated by stem through the process called as Retting
Old
world cotton is also called as Desi cotton or diploid cotton
Example
of diploid cotton G. herbaceum (Uppam cotton) G. arboreum (Karunkanni cotton)
American
cotton is also called as New world cotton or Tetraploid cotton
Examples of
Tetraploid cotton G. hirsutum (Upland cotton) G. barbadense (Sea lsland cotton
In
cotton longer out growth fiber is called as - Lint
In
cotton short out growth fiber is called as - Fuzz
Cotton
species having only lint G. barbadense.
The
process of removal of lint from epidermal layer of the cotton seed is called as
Ginning.
The
ratio between lint and seed in cotton seed is called as -Ginning percentage.
Which
type of pigment present is in cotton seed-Gossypol
Oil
content of cotton seed is 20%.
Family
of jute is Tiliaceae.
Commercial
jute fiber is obtained from- 1. Corchorus capsularis (white or bitter jute), C.
olitorius (Tossa jute).
The
ideal phase of harvest of fiber from the just is Plants are in small pods.
Silk
cotton is obtained from Inner wall of the fruit.
Cultivated
species of sugarcane Noble cane (2n-80): Saccharum officinarum. Indian cane
(2n-82-124) S. barberi Chinese cane (2n-118): S. sinense
Wild
species of sugarcane Wild cane (2n-40-128): S. spontaneum Wild cane
(2n-60-194): S. Robustum
Inflorescence
in sugarcane called as Arrow.
The
Plants which are, cultivated as forages crops and they are cut and fed to
animals in stalls are known as - Fodders
The
grasses and legumes are grown in pasture lands where the animals are led to
graze are known as Pastures.
Scientific
name of napier grass Pennisetum purpureum
Scientific
name of guinea grass Panicum maximum
Scientific
name of Buffel grass Cenchrus ciliaris
Scientific
name of johnson grass S. halapense
The
Queen of fodder is Lucerne (or) Alfalfa
Basmati
rice is having aromatic component due to presence of-Pandamarilactione.
Example
of mutation variety of rice is - Jagannath, Parbhani, Satari.
Who
is father of hybrid rice Yuan Long Ping.
CGMS:
Cytoplasmic Genetic Male Sterile
CMS:
Cytoplasmic Male Sterile
GMS:
Genetic Male Sterility
EGMS:
Environmentally Induced Genetic Male Sterility
PGMS:
Photosensitive Genetic Male Sterility
TGMS:
Thermosensitive Genetic Male Sterility
Semi
dwarf varieties of wheat are 64, Mayo 64 and Lerma Roja 64.
Ear
to Row Selection was first proposed by Hopkins
Modified
ear to row method was proposed by Lonquist.
Example
of Single cross hybrid varieties in maize - COH 1, COH 2.
Example
of three way cross hybrids varieties in maize-Ganga 5.
Example
of double cross hybrid varieties in maize-COH3.
Example
of double top cross hybrid varieties in maize- Ganga safed 2. Hi starch, Ganga
4.
Example
of short duration (<70 Days) variety in sorghum C022.
Which
one is red grain variety of sorghum Paiyur 2.
Sorghum
is an Often cross pollinated crop.
BN1
(Cumbu napier hybrid) is a cross between-P. glaucum X P. purpureum
Tift
23 is Highly susceptible to downy mildew.
Example
of minor millet Fox tail millet: Setaria italica Kodo millet: Paspalum
scrobiculatum Barn yard millet: Echinocola colona Proso millet: Panicum
miliaceum
Example
of short duration variety in red gram-Prabhat, ICPH 8
Origin
of groundnut is - Brazil
Which
is first hybrid of sunflower in India BSH 1.
The
ability of a plant to complete its life cycle before serious soil and plant
water deficit occurs is referred to Drought escape.
First
artificial hybrid was developed by-Thomas Fairchild.
Who
developed individual plant selection method - Nilson- Ehle.
Who
proposed the pureline theory Johannsen
PIRRCOM
means: Project of Intensification of Regional Research on Cotton, Oilseeds and
Millets.
The
All India Coordinated Maize Improvement Project was started in 1957.
Who
proposed centres of origin N.I. Vavilov(1926).
Crop
plants evolved from wild species in the areas showing great diversity are known
as Primary centres of origin.
In
some areas, crop species show considerable diversity of forms although they did
not originate there, such areas are known as Secondary centres of origin
Who
gave this statement 'Law of Homologous Series in Variation N.I. Vavilov.
Eight
main centres of origin were originally proposed by N.I. Vavilov.
Within
the large centres of diversity, small areas may exhibit a much greater
diversity than the centre as a whole, these areas are known as Microcentres.
Primitive
cultivars selected and cultivated by farmers for many generations are known as
Landrace.
The
conservation of germplasm under natural conditions is referred to as In situ
conservation.
The
preservation of germplasm in gene banks are known as Ex situ conservation.
Germplasm
is stored as seeds of various genotypes which are known as Seed bank.
Seeds
which show very drastic loss in viability with a decrease in moisture content
below 12 to 13% are known as Recalcitrant seeds.
Example
of Orthodox seeds corn, wheat, rice, carrot, papaya, pepper, chickpea, cotton,
sunflower
Example
of Recalcitrant seeds citrus, cocoa, coffee, rubber, oil palm, mango, jack
fruit
IPGRI
(International Plant Genetic Resources Institute) is located at Rome
NBPGR
(National Bureau of Plant Genetic Resources), is located at New Delhi.
Directorate
of Plant Protection Quarantine and Storage is located at Faridabad.
An
organisms does not involve fusion et male and female gametes. New plants may
develop either from vegetative parts of the plant (vegetative reproduction) or
they may arise from embryos that develop without fertilization are known as
Asexual reproduction.
The
seeds are formed but the embryos develop without fertilization is called as
Apomixis
An
organism reproduction involves fusion of male and female gametes to form a
zygote, which develops into an embryo are known as Sexual reproduction
The
progeny test was developed by Louis de Vilmorin
In
the plants, male and female gametes are produced in specialized structures
known as Flowers
In
the plants, meiotic division of specific cells take place in-Stamen and Pistil
Productions
of microspores and megaspores are known as Sporogenesis.
Microspores
can produce- Anther (microsporogenesis).
The
production of male and female gametes in the microspores and the megaspores
respectively, is known as-Gametogenesis.
When
the pollen fall onto the stigma of a flower, it is known as-Pollination.
The
Pollen, along with the pollen tube, is known as- Microgametophyte.
The
development of embryo sac from a megaspore is known as Mega gametogenesis
The
fusion of one of the two sperms with the egg cell producing a diploid zygote is
known as Fertilization.
Pollen
from an anther may fall on to the stigma of the same flower is called as Self-
pollination or Autogamy.
When
pollen grains from flowers of one plant are transmitted to the stigmas of
flowers of another plant, it is known as - Cross pollination or Allogamy
When
pollen from a flower of one plant falls on the stigmas of other flowers of the
same plant, it is known as Geitonogamy.
In
some species the flowers open but only after pollination has taken place in the
situation called as Chasmogamy.
Example
of Monoecy plants-Castor, Mango, Banana, Maize.
Example
of Dioecy plants Papaya, date palm.
In
some crop species pistils mature before stamens is called as Protogyny.
In
some crop species stamens mature before pistils is called as-Protandry.
Which
plant exhibits both monoecy and protandry Maize.
The
failure of pollen to fertilize the same flower or other flowers on the same
plant are known as Self incompatibility
The
absence of functional pollen grains in otherwise hermaphrodite flowers is
called as male sterility
The
process that leads to the adaptation of a variety, line or population to a new
environment is known as- Acclimatization
The
mating between genetically similar or closely related individuals are known as
Inbreeding
The
mating between genetically dissimilar individuals or between less closely
related individuals is referred to as - Outbreeding
Genetic
male sterility is caused by Nuclear genes
Cytoplasmic
male sterility is caused by- Cytoplasmic genes
How
to maintain the male sterility line Cross between (A line x B line)
Male
sterility line is also known as A line
The
chemicals used for chemically induced male sterility are called Male
Gametocides.
The
ratio of genetic variance to the total variance is known as Heritability
When
the introduced variety is well adapted to the new environment, it is released
for commercial cultivation without any alteration in the original genotype is
called as - Primary introduction
Example
of Primary introduction varieties Sonora 64, Lerma Rojo, IR8, IR28 and IR 36
The
introduced variety may be subjected to selection to isolate a superior variety
Alternatively, it may be hybridized with local varieties to transfer one or few
characters from this variety to the local ones is called as Secondary
introduction
Evaluation
of the worth of plants on the basis of performance of their progenies is known
as Progeny test
Progeny
test is also called as Vilmorin Principle
The
sudden heritable change is known as Mutation
The
mating or crossing of two plants or lines of dissimilar genotype is known as
Hybridization
The
seeds as well as the progeny resulting from the hybridization are known as
Hybrid
The
removal of stamens or anthers or the killing of pollen grains of a flower
without affecting in any way the female reproductive organs is known as
Emasculation
When
two species of the same genus are crossed, it is known as Interspecific
hybridization
When
the species belong to two different genera, it is called as Intergeneric
hybridization
The
parents involved in hybridization belong to the same species are known as
Intra-specific hybridization
The
term self-incompatibility was coined by - Stout
Modification
of the bulk method is - Single seed descent method
A
cross between a hybrid and one of its parents is known as Backcross
The
recipient parent repeatedly used in the backcross programme is known as
Recurrent parent
The
donor parent used only once in the backcross programme is known as
Non-recurrent parent
The
ear-to-row method was developed by Hopkins (1908).
Recurrent
selection for specific combining ability (RSSCA) was first proposed by Hull
(1945).
Reciprocal
recurrent selection was proposed by- Comstock, Robinson and Harvey (1949).
When
an inbred is crossed with an open-pollinated variety it is known as Top cross.
When
cross is made with an inbred hybrid, synthetic or open-pollinated variety the
common parent used in the test- cross is known as Tester
The
group of plants produced from a single plant through asexual reproduction is
called as - Clone
Mutations
produced by changes in the base sequences of genes are known as Gene or Point
mutations
Some
mutations changes in chromosome structure, or even in chromosome number are
known as mutations.
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