Category Archives: grafting passion fruit seedlings

How to Graft Passion Fruit For Better Productivity

Yellow passionfruit does not have to be grafted. It can grow on its own roots without significant infection by Fusarium.  It can be planted directly into the commercial fruit orchard.

If purple passionfruit is being grown for the fresh market, it needs to be grafted onto the yellow rootstock before planting out.  The two seedlings to be grafted together need to have the same thickness of stem to make the grafting easier.  This means they may not be the same age, as the yellow seedlings are usually more vigorous growers and may be bigger than the purple passionfruit seedling of the same age.  Choose the same size of seedlings, each with stems about a ‘pencil thick’ to graft together.

The pink-flowered banana passionfruit (Passiflora millissima), appears to be resistant to root rot and, when used as a rootstock, also induced a measure of resistance in the purple passionfruit to grease spot (Pseudomonas passiflorae) a serious bacterial disease.

Grafting is an important means of perpetuating hybrids and reducing nematode damage and diseases by utilizing the resistant yellow passion fruit rootstock.

For grafting, you will need the yellow passion fruit rootstock and the purple passion fruit scion. The scion refers to a part of the stem that has been snipped from the parent plant. The scion will be attached to the stem section of the second plant so as to form a grafted union.

This grafted union will callus over gradually and morph into a single plant that grows normally. The new grafted plant will have the qualities of both its parent plants.

Here is a guide to grafting your purple passion fruit:-

  • Make sure the rootstocks and the scions are well irrigated up to 2 hours before the grafting is done.
  • Soak the blade of the grafting knife in a mixture of water and bleach for up to 10 minutes and allow it to dry before you begin using it to cut or splice the scions and rootstocks.
  • Make a wide angled cut into the main stem of the yellow passion fruit rootstock using the utility knife. The cut should be 1 ½ inches long and should be made 10 to 12 inches above the soil.  After making the cut, wipe the blade of your utility knife with a cloth dipped in a disinfectant such as isopropyl alcohol.
  • Remove a three to four inches of the main stem of your purple passion fruit seedlings. Make sure every seedling or scion has at least two leaf nodes. Make a wide angled 1 ½ inch cut on the stem of the seedling using your utility knife.
  • Position the cut surface of your purple passion fruit scion against the cut surface of the yellow passion fruit rootstock to make a union. Wrap this union tightly using a grafting tape.

Cleft Grafting for Passion Fruits

  • Put an opaque plastic bag over the grafted plant. Secure this plastic bag on the rootstock just below the graft union. You can do this by tying it up with a piece of twine.
  • Put the passion fruit grafted union in a shaded area with temperatures not exceeding 65F.
  • The graft union will fully form after 10 to 14 days. Remove the twine after this graft union has occurred.  Open the bag to allow the flow of air. After the buds have started forming on the purple passion fruit scion, get rid of the plastic bag entirely.

Tools to Use

  • Utility Knife
  • Grafting Tape
  • Twine
  • An Opaque Plastic Bag
  • Household bleach such as Jik or Clorox
  • Isopropyl alcohol

Images of Passion Fruit Grafting Process

Grafting of Passion Fruit Using the Top Cleft Method
Grafting of Passion Fruit Using the Top Cleft Method

 

Grafted Passion Fruit Seedlings
Grafted Passion Fruit Seedlings
Passion Fruit Grafting for Better Productivity
Passion Fruit Grafting for Better Productivity

 

 

How to Graft Passion Fruit For Better Productivity

Yellow passionfruit does not have to be grafted. It can grow on its own roots without significant infection by Fusarium.  It can be planted directly into the commercial fruit orchard.

If purple passionfruit is being grown for the fresh market, it needs to be grafted onto the yellow rootstock before planting out.  The two seedlings to be grafted together need to have the same thickness of stem to make the grafting easier.  This means they may not be the same age, as the yellow seedlings are usually more vigorous growers and may be bigger than the purple passionfruit seedling of the same age.  Choose the same size of seedlings, each with stems about a ‘pencil thick’ to graft together.

The pink-flowered banana passionfruit (Passiflora millissima), appears to be resistant to root rot and, when used as a rootstock, also induced a measure of resistance in the purple passionfruit to grease spot (Pseudomonas passiflorae) a serious bacterial disease.

Grafting is an important means of perpetuating hybrids and reducing nematode damage and diseases by utilizing the resistant yellow passion fruit rootstock.

For grafting, you will need the yellow passion fruit rootstock and the purple passion fruit scion. The scion refers to a part of the stem that has been snipped from the parent plant. The scion will be attached to the stem section of the second plant so as to form a grafted union.

This grafted union will callus over gradually and morph into a single plant that grows normally. The new grafted plant will have the qualities of both its parent plants.

Here is a guide to grafting your purple passion fruit:-

  • Make sure the rootstocks and the scions are well irrigated up to 2 hours before the grafting is done.
  • Soak the blade of the grafting knife in a mixture of water and bleach for up to 10 minutes and allow it to dry before you begin using it to cut or splice the scions and rootstocks.
  • Make a wide angled cut into the main stem of the yellow passion fruit rootstock using the utility knife. The cut should be 1 ½ inches long and should be made 10 to 12 inches above the soil.  After making the cut, wipe the blade of your utility knife with a cloth dipped in a disinfectant such as isopropyl alcohol.
  • Remove a three to four inches of the main stem of your purple passion fruit seedlings. Make sure every seedling or scion has at least two leaf nodes. Make a wide angled 1 ½ inch cut on the stem of the seedling using your utility knife.
  • Position the cut surface of your purple passion fruit scion against the cut surface of the yellow passion fruit rootstock to make a union. Wrap this union tightly using a grafting tape.
  • Put an opaque plastic bag over the grafted plant. Secure this plastic bag on the rootstock just below the graft union. You can do this by tying it up with a piece of twine.
  • Put the passion fruit grafted union in a shaded area with temperatures not exceeding 65F.
  • The graft union will fully form after 10 to 14 days. Remove the twine after this graft union has occurred.  Open the bag to allow the flow of air. After the buds have started forming on the purple passion fruit scion, get rid of the plastic bag entirely.

Tools to Use

  • Utility Knife
  • Grafting Tape
  • Twine
  • An Opaque Plastic Bag
  • Household bleach such as Jik or Clorox
  • Isopropyl alcohol

Establishing and Grafting Your Passion Fruit Seedlings

Passion fruit plants are affected by a variety of insects and diseases that can have an adverse impact on the yield and profitability of your farm. Before venturing into passion fruit production, it is therefore important for you to have the proper knowledge and expertise on the management of your passion fruit vines so as to maximize on the production. Optimal yields are achieved through proper management and plant husbandry.

Passion Fruit Grafting
Passion Fruit Grafting

Before you venture into passion fruit farming, it is necessary to know some basics about the passion fruit crop you are going to plant.

Passion fruit seed extraction, planting and grafting

The seed extraction

The first step to establishing your passion fruit crop is seed extraction. In this process, the healthy and mature fruits of the passion fruits that have a history of excellent performance are extracted from the parent plant.

The extracted seeds are then put in water for at least three days which will allow them to ferment and make it easier to separate the passion fruit seeds from the pulp.

After extraction, the passion fruit seeds are then dried under shade. If you don’t store the passion fruit seeds in a cool, dark and dry place, they are going to lose the viability and that means the rate at which they will germinate and thrive will be quite low.

Planting your passion fruit seeds

The passion fruit seeds should be planted into a pre-prepared seed bed. Alternatively, you can also use polythene bags in planting the seedlings which will make the transplantation a lot easier. Typically, the polythene bags should be at least 6cm wide and 22.5cm high.

When planting the seeds, use soil that is sterilized so as to get rid of the nematodes that are like to afflict the passion fruit roots and kill the plants or lower their yields. Sterilised soils also eliminate the various soil borne diseases and various other harmful micro-organisms.

There are various ways in which you can carry out soil sterilisation. For example, you can use hot steam or simply expose the soil to sun for several days before planting the seeds. The germination of the passion fruit seeds will begin at least 17 days after the planting has been done.

Grafting Your Passion Fruit

The rootstock of the yellow passion fruit variety is generally used because it has excellent resistance to the nematodes and various other passion fruit diseases. The purple passion fruit varieties are generally more vulnerable to these pests and diseases. Using the yellow passion fruit rootstocks will increase the survivability of the plant.  The rootstocks should be at least 50cm high and 3 or mm thick.

After the germination, choose healthy seedlings with dark green leaves for grafting. The scions of healthy looking high yielding purple passion fruits will be used for the grafting. These should be collected when the plant has flowered. The mother plants from which you will collect the scions should be raised in an area where there is sufficient protection from insects so as to reduce the occurrences of diseases.

Make sure that the grafting equipment is sterilised so as to prevent the spread of diseases. A simple home based solution that you can use to sterilise your passion fruit grafting equipment is Clorox.

You can graft the passion fruit using the cleft technique or by splicing.

Post Grafting

After the grafting, make sure that the seedlings are watered and a hardened by exposing them to sunshine gradually.

One month after grafting, you can remove the grafting tape from the union and then transplant your seedlings in the field.