Mandarin / Orange

Questions

Answer

1

Botanical Name

Citrus reticulata

2

Family

Rutaceae

3

Origin of Mandarin 

China

4

Mandarins are highly susceptible to

Water logging

5

Best suited time for pruning of Mandarin

Late winter / Early spring

6

Mandarin, Sweet orange, Acid lime are

Poly embryonic

7

Pummelo, Tahiti lime, Citron is

Mono embryonic

8

Most promising root stock for Mandarin & Sweet orange

Rangpur lime

9

Trifoliate orange is resistant to

Phytophthora & Nematodes

10

Glycoside responsible for bitter taste of citrus fruit juice is

Limolin

11

Spacing requirement for the kinnow variety is

1.8 x 1.8 m

12

Hybrid kinnow is cross between

King sweet x Willow leaf

13

Mandarin varieties are

Coorg,

Khasi,

Nagpur,

Satsuma (Seedless)

Sweet orange

14

Botanical name

Citrus sinensis

15

Family of sweet orange

Rutaceae

16

Origin of sweet orange

China

17

Best method of irrigation for sweet orange

Double ring

18

Variety which is more prone to pre harvest fruit drop

Mosambi & Blood Red

19

Pre harvest fruit drop of citrus is controlled by

2,4-D (20 ppm)

20

Seedless variety of sweet orange

Shamouti

21

Best rootstock for rough lemon

Satgudi

22

Best rootstock for Mosambi

Rangpur lime

23

Pre harvest fruit drop in citrus is due to

Physiological & Pathological factors

24

De-greening of citrus fruit is done by

CaC₂

25

Varieties of Sweet orange

Hamlin,

Pineapple,

Mosambi,

Satgudi,

Jaffa

Lime / Lemon

26

Botanical name of sweet lime

Citrus limetoides

27

Origin

India

28

Self incompatible is found in

Sweet lime

29

Tohiti lime

Citrus latifolia

30

Tohiti lime is a

Triploid lime

31

Rangpur lime

Citrus limonica

32

Pummelo

Citrus grandis

33

Largest fruit among citrus fruit sp.

Pummelo

34

Lime which is highly susceptible to Tristeza virus

Kagzi lime

35

Indicator plant for Tristeza virus

Kagzi lime

36

Citrus canker is the most serious disease of

Acid lime

37

Sweet lime is more resistant to 

Greening

38

Seedless variety of Acid lime

Chakradhar

39

Canker tolerant variety of Acid lime

Pramalini

40

Acid lime variety tolerant to Tristeza & Canker is

Sai Sarbati

41

Acid / Kagzi lime varieties

Chakradhar,

Vikram

Jai devi,

Sai sarbati,

Pramalini

42

Sweet lime varieties

Mithotra,

Mitha chikna

43

Lemon varieties

Lisbon,

Eureka,

Lucknow seedless,

Kagzikalan & Pant lemon

Grapefruit

44

Botanical name of Grapefruit

Citrus paradisi

45

Family of Grapefruit

Rutaceae

46

Origin of Grapefruit

Barbados

47

Grapefruit is cross between

Citrus sinensis x Citrus maxima

48

Grapefruit is also known as

Breakfast fruit,

Forbidden fruit

49

Star ruby is developed from Hudson grapefruit through

Mutation Breeding

50

Grapefruit varieties

Flame,

Hudson,

Marsh,

Foster,

Red blush,

Ruby red

Common points on Citrus sp.

51

Organic acid found in Citrus sp. is

Citric acid

52

Pigments present in Citrus sp. is

Xanthophylls & Carotene

53

Flavoring compound present in Citrus

Citral (Lemon) & Valencene (Orange)

54

Citrus classification was given by

Tanka & Swingle (1945)

55

Ultra dwarf rootstock of Citrus

Flying drago

56

Advanced method of propagation for Citrus is

Micro propagation & Tissue culture

57

Planting time for Sweet orange

July – September

58

Planting time for Acid lime

Dec – Feb & June – Sept

59

Planting time for Mandarin

Nov – Dec.

60

Citrus aurantifolium is propagated by

Seed

61

Citrus reticulata, Citrus sinensis and Citrus deliciosa is propagated by

T-budding / Shield budding

62

Granulation in Citrus is due to

High temperature & Relative Humidity

63

Granulation in Citrus is managed by

2,4-D

64

Yellow leaves of Citrus is due to

Mo deficiency

65

Citrus die back is due to

Cu deficiency

66

Exanthema in Citrus id due to

Cu deficiency

67

Little leaf of Citrus is due to

Cu deficiency

68

Average yield of Lemon

3000-5000 fruits/tree

69

Average yield of Lime

1500-1000 fruits/tree

70

Average yield of Orange

500 fruits/tree

71

Average yield of grapefruit & pommelo

3000 fruits/tree

 Citrus crop insect pest and diseases are posted in Entomology and Pathology Section