Yes the images shows  viviparic fruits of Carica papaya L.  Vivipary is unusual feature in papaya and suppose to occur under high humidity and high temperatures.

It has been seen too in Cacti from humid zones but not in Carica candicans, which is a papaya parental species from arid and semi-arid regions of South America. 

If the seeds are in germinating stage it is definitely a condition of incipient/pseudovivipary (not true vivipary) as found in several halophytic species like Aegiceros sp., Aegialitis rotandifolia, Nypa fruticans, several species of Avicennia and some othe non halophytic species like Citrus spp., Artocarpus spp., even in Cocos nucifera and rarely in Acanthus caudaceous(High altitudinal plant) and Leucoceptrum cannum. Again to me it is a case of cryptovivipary as the hypocotyl emerges from seed only(not from the entire fruit), and in case of true vivipary hapocotyl emerges from the fruit wall as found in case of true mangrove ( Rhizophora spp., Ceriops spp., Kandelia candel, Bruguiera spp. of Rhizophoraceae).

Dear Dr. Rao,

I think the picture is of a papaya variety that has   vivipary and white seed disorder.

Best regards

Definitely a case of cryptovivipary/pseudovivipary/incipient vivipary  and I agree with Jackson, A., the seeds are covered with some mycelial structures might be a case of fungal infection and seeds are normal as generally found in Carica papaya

Thanks for the scientific inputs, In Rhizophora and Bruguiera species entire fruit develops into a plant ( as said by Dr Ghosh) but in this Carica species seeds are not normal some how these are abnormal ( pictures shows) further some structures whcih are emerging from the seed like structures may be primary radicle ?

Dr Rao I appreciate your curiosity. To me it appears to be callus  tissue from the chalasa and not embryonic and hence they fail to develop develop radicle and plumule  normally. 

Hi Geddada,

Have you seen this phenomenon before? Seeds already sprouted in Papaya.

Hi Geddada,

I attached this 2014 paper for you entitled: "New fruit and seed disorders in Papaya (Carica papaya L.) in India".

They examined 14 important papaya germplasms, and concluded that " The maximum incidence of vivipary and white seed disorders were observed during May (13.4 and 75.7%, respectively) while least incidence was observed in February and March (10 and 5%, respectively)."

The vivipary and white seed disorders can cause serious economic loss in seed production.  [p.576-577, yellow highlight].

**Click on the picture to see a clear version

 Thank you Dr Yuan-Yeu Yau for your kind attachment and information. 

Dr . Yuan, I have noticed seed germination while still inside the fruit is common in Jack fruit, mango and citrus fruits and in some berries

Yes Dr Kaladharan

Excellent observationes dear Dr. Geddada Mohan. Yes, it viviparous phenomenon and happens sometimes with different factors.

Does seed germination inside a fruit due to environment or genes also involve?

@ Kaladharan Edavilakathil P,

Really, I have never seen mango seed (large single one) germinates inside their fruits before.

Mangrove--Seed germination on the tree.

In animal kingdom, we are viviparous animals.

"Those animals which give birth to young ones or baby animals are called viviparous animals. The young one develops in the uterus inside the body of the mother. When the young one is fully developed, then the mother gives birth due to which the alive young one comes out from the body of the mother. For Ex: Humans, cats, dogs, lion, tiger, horse, rabbit etc."

Dear Dr Yuan thank you for your kind information, in mango and citrus seed germination was observed rarely. Mangroves are tropical formations which occurs in marshy habitats, so to maintain its progeny vivipary is a special adaptation in these populations.

Interesting question! I love the discussion. Best regards

A very Good Question. Following proceedings.

Additional pics similar to your type...

These papaya also belongs to humid region....

I recently found one too!

This structure noticed today inside the Papaya

Structure after magnification

Thank you Dr Kalyan Brata Santra for the nice photographs.

I found this. They are hard white strands , crunchy and feel like dried ramen. The papaya smelled bad when it was cut open. What is it?

In side the fruits, seeds are germinating furthrr texture of the fruit indicated that it was rotten, so smell is odd.

thank you

Papaya shows instances of vivipary. There are some reports. Although the physiological conditions triggering such events need further clarifications