1. The document provides information on lemons, including that they are a hybrid of Citrus medica and rough lemon. 2. It notes there are different types of lemons classified by acidity and use, and that lemon flowers are perfect with both male and female parts. 3. The document discusses lemon flowering, pollination, ripening, and that inducing water stress can encourage off-season flowering commercially.

1. Welcome

3.  B.N. :- Citrus limon
 Family :- Rutaceae
 Order:- Sapindales
 Ch No.:- X=9, 2n=18
 Genus :- Citrus
 Fruit type :- Hesperidium
(Specialised Berry)

4. • Lemon is hybrid of C. medica and rough lemon or C. maxima
1. Major acid lemons e.g. Eureka,
Lisbon
2. Minor acid lemons e.g. Assam
lemon, Elaichi Nimbu, Genoa
3. Sweet lemons e.g. Dorshapo, Pani
Jamir
4. Ornamental lemons e.g.
Variegated Pink-fleshed lemons
5. Lemons like fruits e.g. Rough
lemon (C. jambhiri), Meyer lemon.
• Hodgson placed the lemons into following groups :-

5. Difference between Orange and Lemon flower :-
Orange
 Orange trees bear clusters
of fragrant flowers.
 Each with five oblong
petals.
 Orange tree flowers contain
20 to 25 yellow-topped
stamens.
Lemon
 Lemon tree flowers grow
singly or in clusters and
have only a mild fragrance.
 Petals are long, and each
flower has four or five
purple color petals.
 20 to 40 yellow stamens
fused into one or several
parts.

6. • The flowers of lemon trees, are
perfect, meaning that each flower
has both male and female sex
organs.
• The female portion of the flower
includes the stigma, style and ovary,
which is known as the pistil.
• The male portion of the flower is
known as the stamen, which
includes the filaments and anthers.

8. • Lemons ripen anywhere between four and 12
months after flowering.
• Flowers most commonly appear in spring.
• Inflorescence in citrus species is of cymose type.
• Anthesis takes place in the morning between 9.00
am to 12.00 noon.
• Flowers on shaded side of the tree have been
observed to open later than those exposed to
sunshine.

9. • Lemon flowers are perfect,
having both sex on the same
blossom so that self-
pollination takes place.
• Hand pollination is also done
in lemon.
Hand pollination in lemon.

10. Some citrus species and varieties also show a wide
range of behaviors regarding both flowering time
and response to the inductive conditions.
For example, lemon trees tend to show sparse
flowering over the year even in subtropical
conditions and also exhibit higher floral responses
to water stress than to cold inductive temperatures.
This effect has been commercially used to induce
off-season flowering.

11. • Producing early maturing citrus fruits
with high yield and fruit quality.
• Developing rootstocks having disease
and nematodes resistance, wider
adaptability, etc.