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How to make seedless fruit? I need suggestions

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Lauta_hibrid:
I am in the process of breeding new varieties, both common and rare, or resistant to cold. As a basis I have read some works, but some answer the basic questions I ask myself, many works do not talk about which crosses inherit the "seedless".
There are different ways for a fruit, in this case my buecaria mandarins, to not produce seeds. It is male sterility, female sterility, or self-compatibility. As I see it is accepted that Satsuma presents a genetics in the cytoplasm that generates pollen inefficiency, it forms inefficient anthers, it hardly produces pollen and if it does it is not pollinated. I have used its pollen to cross with Nagami kumquat and I achieved a hybrid. But for it to inherit the seedless part it would be optimal to use it as a mother. Examples of this are: two hybrids with poncirus that I saw in the forum and in video and the kiyomi tangor plant that is a cross between Satsuma pollinated with orange pollen. I use this resulting plant, as it is zygotic, to achieve new crosses that inherit the seedless part (example: dekopon).

The problem with Satsuma is that it gives few seeds if you pollinate it (one seed/fruit in my practice), and they give nucellar plants (clones). Around 10 to 15% can be zygotic. This poses a big problem.

The other ones to use as a mother would be Ellendale, Ortanique, Orri, or Clemenules (clementines). They are zygotic or partially zygotic, but many are by self-compatibility of their pollen... but I don't know how that characteristic behaves, if it is inherited or not. If someone read something about whether the crosses of these, or mostly of Clementine, inherit the seedless, it would be very useful for me.

BorisR:
Let me remind you that tangerine kishu, navel oranges, tangor kiyomi also have one or another sterility.

brian:
Not a genetic way, but some varieties will be totally seedless if pollinating insects are blocked.

Lauta_hibrid:
thanks, I know I didn't go into much detail because I'm more focused on mandarins, and I only found one hereditary mechanism which is using Satsuma or its offspring Kiyomi. I remember some work on Kishu Mandarin, but I don't remember if it was used as a male or female parent. I'll have to look more up. by the way, I don't think Kiyomi is in Argentina (where I'm from), that's why I didn't think of it. next year I'll try to crossbreed with navel orange to see if I'm lucky... but the probability of inheritance is low and the probability of forming seeds is low. but statistics are the king, the more attempts, the more probability. this year I pollinated all my Satsumas okitsu x Morton citrange and by poncirus Fly dragon.

martweb:
Kishu is female sterile, so can only be used as pollen donor for crosses.

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