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NaCl stress has reached to its alarming state in the history of
various regions of Pakistan. Vegetable production is now a problem
in salt affected areas of Pakistan. Especially onion is also
sensitive to salt stress. In this way the present study was planned
to check the effect of salt stress on different cultivars of onion.
It proved a significant effect on the growth and physiology of
onion. That ultimately affects the yield.
Excessive accumulation of soluble salts in soil suppresses plant
growth and productivity so an efficient and simple screening
technique for selection of available okra (Abelmoschus esculentus
L.) genotypes for salt tolerance was executed. Seeds of eight okra
genotypes were grown in pot culture under protected environment of
lath house. Twenty days old seedlings were exposed to salinity
under control, 20, 40, 60 and 80 mM NaCl. Results revealed that
increasing salinity caused reduction in plant height, number of
leaves, fresh and dry weights as well as gas exchange
characteristics like photosynthesis rate and stomatal conductance
of okra. Na contents were higher in salt sensitive genotypes as
compared to tolerant one. Okra genotypes OH-2324 and OH-597
spectacled best performance in all the measured parameters and
grouped under salt tolerant cultivars while OH-152 and OH-809 were
aggravated in maintaining normal functioning at higher salinity
levels thus proved to be salt sensitive.
Pea (Pisum sativum L.) is a green pod-bearing plant belongs to
family leguminosae. Peas are highly rich in protein, manganese,
dietary fiber, vitamin C, vitamin K, vitamin B1 and folate. The
high amount of vitamin K1 from green peas makes them very important
for bone health. Peas are widely grown as a cool season vegetable
crop. Pea plants are highly sensitive to the summer heat. Moringa
leaf is also a rich source of ascorbates, carotenoids, phenolics,
potassium and calcium which have plant growth promoting
capabilities and are being applied as exogenous plant growth
enhancers. Antioxidants such as ascorbic acid and glutathione,
which are found at high concentrations in moringa chloroplasts and
other cellular compartments, are crucial for plant defense against
oxidative stress. It is therefore hypothesized that leaf extract
from moringa, having a number of plant growth promoters, mineral
nutrients and vitamins in a naturally balanced composition, which
may promote the pea growth and extend its fruit bearing period.
This study was conducted to monitor the impact of exogenous
application of MLE (moringa leaf extract) on the growth and yield
performance of pea.
Potato (Solanum tuberosum L.) is a starchy, tuberous crop belongs
to Solanaceae family (also known as the Nightshades). Potatoes are
the world's fourth largest food crop, following rice, wheat, and
maize. Genetic testing of the wide variety of cultivars and wild
species suggest that the potato has a single origin in the area of
southern Peru, from a species Solanum brevicaule complex. Soil
health is a crucial factor for obtaining higher yield of vegetable
crops. Poor soil health, soil structure, reduced microbial
activities may result in deduction in plant growth and yield. To
improve soil health, structure, fertility and productivity organic
materials such as farm yard manure, compost, sewerage sludge and
municipal waste has been used. Chemical fertilizers are also used
to obtained sustainable productivity. To feed huge some of
population, it is imperative to improve crop productivity with
least effect on environment. This could only be achieved by the
integration of conventional and non conventional approaches. This
study was initiated to monitor the effects of humic acid and
hydrogel on growth and yield performance of potato under general
field conditions.
Moringa extract is blessed with a variety of vital plant growth
substances. These plant growth substances are responsible for
different physiological activities in plants. These plant growth
substances are endogenously produced in the plant, but foliar
application of moringa extract increases endogenous levels of these
plant growth substances (Hormone). That ultimately boost the growth
and yield of pea.
Fruit production has been the earliest of food sources meeting the
needs of human race for centuries. Owing to varied climate under
the sun, the fruit production has also got wide range in fruit
types, nutritional values and production technologies. Citriculture
has emerged as one of the major fruit production industries in the
world. Like the other fruits, citrus is known for its versatility
in use. It is used as fresh fruit, its peel is used for the
extraction of essential oils, pulp in extraction of juices and also
along with peel, used to prepare jams, jellies and marmalades.
Owing to the ever increasing pressure from population explosion,
the need has arisen to improve the crop to meet the demands which
have a direct relation with galloping population of the global
world of 21st century. In this research, I have been searching for
an efficient procedure for callus induction, regenerative ability
from different explants in Citrus reticulata Blanco, in order to
provide a basis for genetic improvement. I have studied the effects
of different growth regulators on callus initiation from different
explants and shoot and root development from calli.
Gibberellic acid GA3 is a naturally occurring growth harmone. It
hastens the growth by augmenting cell division. Cell division is
facilitated by improved cell membrane elasticity by the application
of gibberellic acid. Foliar feeding of gibberellic acid is ideal
for plants having indeterminate growth habit in which vegetative
and reproductive growth runs simultaneously. Okra is such a plant
whose yield potential can be improved by foliar application of
gibberellic acid. In addition to this gibberellic acid is an
endogenously produced growth substance. So its foliar feeding is
totally eco-friendly.
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